mb/google/brya/brya0: Manually probe fw_config for DB_LTE

In order to use the USB WWAN module in USB mode (as opposed to PCIe),
the PCIe RP must be turned off at the FSP level. The `probe` statement
in the devicetree unfortunately takes effect too late, because the UPDs
for disabling/enabling PCIE RP belong to FSP-M (romstage), whereas
fw_config probing for devicetree is done in ramstage.

Add a new variant-specific file which will handle manually setting the
UPD based on FW_CONFIG instead.

BUG=b:180166408
TEST=set CBI FW_CONFIG field to LTE_USB, see message in console,
set field to LTE_PCIE, do not see message in console.

Change-Id: Ica2f64ec99fa547e233012dc201577a14f6aa7d7
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54633
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions