kirby: Always assume adaptor power source
kirby: Always assume adaptor power source

Until we can properly detect power source type, always assume adaptor
power source to allow more input current.

BUG=chrome-os-partner:22055
TEST=Plug in adaptor and see 0x84 from BQ24192's register 0x8.
BRANCH=None

Change-Id: Ic6adc0d459f9cc038870e3dd2b680549c4b5df39
Signed-off-by: Vic Yang <5fd92abeee651458f98e2856f4f200ee971cee4d@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/66934
Reviewed-by: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>

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