Follow L850GL spec to adjust power sequence. RST need to drive low
before power on then drive to high.
SPEC:FIBOCOM_L850-GL Hardware User Manual_V1.0.8
BUG=b:186374631
TEST=WWAN is detected by lsusb.
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I13357677bb1ab185abf1d4c915a762a9d6894312
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52694
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
05877ee1d7