Add ctrlram command to get/set controller RAM content.
Add ctrlram command to get/set controller RAM content.

BUG=none
TEST=tested on bds.

Change-Id: Ibfabf2c35d19c231f3ebe860877b9f4020b0f870

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