cr50: add console commands to have parity with servo

This change adds apreset, ecreset, ec_rst, sys_rst and powerbtn options
to the ccd console command.

BUG=chrome-os-partner:58123
BUG=chrome-os-partner:56835
BRANCH=none
TEST=manual
	sysrst resets the AP
	sysrst on/off controls SYS_RST_L

	ecrst resets the ec
	ecrst on/off controls EC_RST_L

	powerbtn 500 will simulate a power button press for 500 ms

Change-Id: I89adc88eb407730c9d57811a07bfef8fcf63c5b9
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/393809
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
3 files changed