mb/google/skyrim: Configure WLAN

Configure PCIe Clk Source and Clk Request mapping. Configure GPIOs used
for WLAN.  Mappping derived from Skyrim schematic.

BUG=b:214412172
TEST=Builds

Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I16e35b443f741d366589fefb7fd21863369d1ec2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62165
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/mainboard/google/skyrim/Kconfig

@@ -20,6 +20,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select BOARD_ROMSIZE_KB_16384
 	select DRIVERS_I2C_GENERIC
 	select DRIVERS_I2C_HID
+	select DRIVERS_WIFI_GENERIC
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_ESPI
 	select ELOG