drivers/intel/wifi: Make Intel wifi driver arch agnostic

Mark Intel WiFi driver to depend on PCI and remove the dependency on x86
architecture.

BUG=None
BRANCH=None
TEST=Compile and Boot to ChromeOS.

Change-Id: I762007d53b43bbc78924ee8efe236d6a7ff4dc57
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33959
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/drivers/intel/wifi/Kconfig

@@ -1,6 +1,6 @@
 config DRIVERS_INTEL_WIFI
 	bool "Support Intel PCI-e WiFi adapters"
-	depends on ARCH_X86
+	depends on PCI
 	default y if PCIEXP_PLUGIN_SUPPORT
 	select DRIVERS_GENERIC_WIFI if HAVE_ACPI_TABLES
 	help