Fix CAN transceivers GPIO hog definitions

Update reference hardware support kernel patch to fix enabling the
vehicle board CAN transceivers, I mistakenly set them to output-high
instead of output-low when creating the GPIO hog definitions.  The
pins need to be low to disable standby mode on the transceivers.

Bug-AGL: SPEC-4073

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I882bdac8c30e42a2271c169e3cf888a6505093de