Set PL2 based on either 90% of usb c charger's max power or sku id if
using a barrel jack.
BUG=b:37473486
BRANCH=None
TEST=output debug info for different skus and make sure
PL2 set correctly.
Change-Id: I487fce4a5d0825a26488e71dee02400dbebbffb3
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://review.coreboot.org/21772
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>