x86: acpi: Add a common routine to write WiFi info

Intel WiFi chips can use a common routine to write the information needed
by linux. Add an implementation of this.

Enable it for coral.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/intel_common/Makefile b/arch/x86/cpu/intel_common/Makefile
index 207d541..f1d1513 100644
--- a/arch/x86/cpu/intel_common/Makefile
+++ b/arch/x86/cpu/intel_common/Makefile
@@ -24,6 +24,7 @@
 obj-y += fast_spi.o
 obj-y += lpc.o
 obj-y += lpss.o
+obj-$(CONFIG_INTEL_GENERIC_WIFI) += generic_wifi.o
 ifndef CONFIG_TARGET_EFI_APP
 obj-$(CONFIG_$(SPL_TPL_)X86_32BIT_INIT) += microcode.o
 ifndef CONFIG_$(SPL_)X86_64