common/keyboard_8042: Add print when updating button
common/keyboard_8042: Add print when updating button

keyboard_update_button gets called when the power button is pressed.
It isn't obvious where the scan codes were coming from. Add a print
statement to make it easier to debug.

BUG=b:218874489, b:160595155
BRANCH=guybrush, zork
TEST=Boot guybrush with power button and see message

Signed-off-by: Raul E Rangel <9a9c998e11a2655b1de9a05eeeef5f710c0dc7ed@chromium.org>
Change-Id: Icd45a526e254976582172a10e1c16d0a3e14fce7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3602227
Reviewed-by: Rob Barnes <3ced0940a2329ce70499686f01d3d60685ec66ed@google.com>
Reviewed-by: Diana Z <cb2016afc7183e5356c690dc63b4ba817470501a@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec