FreeBSD/src b935397 (r349115)sys/arm/allwinner aw_pwm.c, sys/dev/pwm ofw_pwm.h pwmbus.h

Rename pwmbus.h to ofw_pwm.h, because after all the recent changes, there
is nothing left in the file that related to pwmbus at all.  It just contains
prototypes for the functions implemented in dev/pwm.ofw_pwm.c, so name it
accordingly and fix the include protect wrappers to match.

A new pwmbus.h will be coming along in a future commit.
DeltaFile
+55-0sys/dev/pwm/ofw_pwm.h
+0-54sys/dev/pwm/pwmbus.h
+1-3sys/dev/pwm/ofw_pwm.c
+0-2sys/arm/allwinner/aw_pwm.c
+0-2sys/dev/pwm/pwmbus.c
+56-615 files

UnifiedSplitRaw