WS cleanup: remove trailing empty lines

arch/arm/cpu/arm926ejs/cache.c

arch/arm/cpu/armv7/psci-common.c

arch/arm/cpu/armv8/hisilicon/pinmux.c

arch/arm/cpu/armv8/xen/hypercall.S

arch/arm/dts/sama7g5-pinfunc.h

arch/arm/include/asm/arch-imxrt/imxrt.h

arch/arm/include/asm/arch-rockchip/f_rockusb.h

arch/arm/include/asm/arch-stm32/stm32f.h

arch/arm/include/asm/arch-stv0991/stv0991_defs.h

arch/arm/include/asm/xen.h

arch/arm/lib/ccn504.S

arch/arm/mach-at91/armv7/sama7g5_devices.c

arch/arm/mach-at91/atmel_sfr.c

arch/arm/mach-bcm283x/msg.c

arch/arm/mach-imx/mx7/soc.c

arch/arm/mach-kirkwood/cpu.c

arch/arm/mach-octeontx/Makefile

arch/arm/mach-octeontx2/Makefile

arch/arm/mach-omap2/pipe3-phy.c

arch/arm/mach-snapdragon/dram.c