FreeBSD/src 277a038 (r342004)sys/arm/allwinner aw_pwm.c, sys/arm64/conf GENERIC

arm64: allwinner: Add pwm driver

Add a pwm driver for Allwinner PWM
Add pwm and aw_pwm to the GENERIC kernel
DeltaFile
+340-0sys/arm/allwinner/aw_pwm.c
+4-0sys/arm64/conf/GENERIC
+1-0sys/conf/files.arm64
+345-03 files

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