sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

powerpc powernv: Remove unused devclass arguments to DRIVER_MODULE.

Remove unused iicbus_devclass.

MFHead@r345275

MFhead@r344786

Merge ^/head r344549 through r344775.

powerpc/powernv: Add asynchronous token management for powernv

The OPAL firmware only supports a finite number of in-flight asynchronous
operations. Rather than have each subsystem try to manage it

powerpc/powernv: Add asynchronous token management for powernv

The OPAL firmware only supports a finite number of in-flight asynchronous
operations. Rather than have each subsystem try to manage its own, use a
central management service to hand out tokens.

More work can be done to improve asynchronous behavior, such as funneling
things through a future OPAL heartbeat handler, but capabilities will be
added as needed.

Augment the existing consumers (i2c and sensors) to use this new API.

MFC after: 4 weeks

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powerpc/powernv: Make opal_i2c driver work with attached i2c drivers

* FreeBSD stores addresses in 8 bit format, but the OPAL API requires the 7-bit
address, and encodes the direction elsewhere.

powerpc/powernv: Make opal_i2c driver work with attached i2c drivers

* FreeBSD stores addresses in 8 bit format, but the OPAL API requires the 7-bit
address, and encodes the direction elsewhere. Behave like other i2c drivers,
and shift accordingly.
* The OPAL API can already handle multiple requests in flight. Change the async
token to be private to the thread, so as not to stomp across i2c accesses,
remove the limitation error message, and use the correct message index to
transfer all messages in the list.
* Micro-optimize the async handler to not continuously call pmap_kextract() when
spin-waiting for the operation to complete.

This has been tested by hexdumping an EEPROM attached via the icee(4) driver.

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Let ofw_iicbus work its magic on OPAL i2c buses.

ofw_iicbus already has attachments on iichb. Rather than adding an explicit
attachment onto opal_i2c, simply change the exposed name of the OPAL i2c

Let ofw_iicbus work its magic on OPAL i2c buses.

ofw_iicbus already has attachments on iichb. Rather than adding an explicit
attachment onto opal_i2c, simply change the exposed name of the OPAL i2c bus
to 'iichb'.

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Reverting r330925 for now

PowerNV: Fix I2C to compile if FDT is disabled

Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies

PowerNV: Initial support for OPAL I2C transfers

Add I2C OPAL driver and a set of dummy-ones to allow
all I2C things on Power8 to attach.

TODO: better async token management

Submitted by:

PowerNV: Initial support for OPAL I2C transfers

Add I2C OPAL driver and a set of dummy-ones to allow
all I2C things on Power8 to attach.

TODO: better async token management

Submitted by: Wojciech Macek <wma@semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies

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