Add x86power command to get/set x86 power state
Add x86power command to get/set x86 power state

Signed-off-by: Randall Spangler <rspangler@chromium.org>

BUG=chrome-os-partner:7528
TEST=x86power s0; should turn on all power rails (check via gpioget)

Change-Id: I284ac2104e02748ed69408873fbcebb9d54cdcff

longsleep/ec,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,gelraen/cros-ec,eatbyte/chromium-ec,fourier49/BZ_DEV_EC,alterapraxisptyltd/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BZ_DEV_EC,coreboot/chrome-ec,fourier49/BIZ_EC,akappy7/ChromeOS_EC_LED_Diagnostics,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,thehobn/ec,md5555/ec,gelraen/cros-ec,mtk09422/chromiumos-platform-ec,eatbyte/chromium-ec,longsleep/ec,fourier49/BIZ_EC,fourier49/BIZ_EC,alterapraxisptyltd/chromium-ec,md5555/ec,eatbyte/chromium-ec,thehobn/ec,longsleep/ec,coreboot/chrome-ec,md5555/ec,mtk09422/chromiumos-platform-ec,fourier49/BZ_DEV_EC,md5555/ec,thehobn/ec,alterapraxisptyltd/chromium-ec,gelraen/cros-ec,gelraen/cros-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,thehobn/ec,longsleep/ec,alterapraxisptyltd/chromium-ec,mtk09422/chromiumos-platform-ec,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,eatbyte/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics