mb, soc/intel: Switch to using drivers/wifi/generic for Intel WiFi devices

This change switches all mainboard devices to use drivers/wifi/generic
instead of drivers/intel/wifi chip driver for Intel WiFi
devices. There is no need for two separate chip drivers in coreboot to
handle Intel and non-Intel WiFi devices since the differences can be
handled at runtime using the PCI vendor ID. This also allows mainboard
to easily multi-source WiFi chips and still use the same firmware
image without having to distinguish between the chip drivers.

BUG=b:169802515
BRANCH=zork

Change-Id: Ieac603a970cb2c9bf835021d1fb0fd07fd535280
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46035
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb
index 98b678a..12312e9 100644
--- a/src/mainboard/google/glados/devicetree.cb
+++ b/src/mainboard/google/glados/devicetree.cb
@@ -118,7 +118,7 @@
 		device pci 19.1 off end # I2C #5
 		device pci 19.2 on  end # I2C #4
 		device pci 1c.0 on
-			chip drivers/intel/wifi
+			chip drivers/wifi/generic
 				register "wake" = "GPE0_DW0_16"
 				device pci 00.0 on end
 			end