x86: dts: Add compatible string for Intel ICH9 SPI controller

Add this to the enum so that we can use the various fdtdec functions. A
later commit will move this driver to driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>

include/fdtdec.h

@@ -173,6 +173,7 @@ enum fdt_compat_id {
 	COMPAT_INTEL_MODEL_206AX,	/* Intel Model 206AX CPU */
 	COMPAT_INTEL_GMA,		/* Intel Graphics Media Accelerator */
 	COMPAT_AMS_AS3722,		/* AMS AS3722 PMIC */
+	COMPAT_INTEL_ICH_SPI,		/* Intel ICH7/9 SPI controller */
 
 	COMPAT_COUNT,
 };

lib/fdtdec.c

@@ -83,6 +83,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
 	COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"),
 	COMPAT(INTEL_GMA, "intel,gma"),
 	COMPAT(AMS_AS3722, "ams,as3722"),
+	COMPAT(INTEL_ICH_SPI, "intel,ich-spi"),
 };
 
 const char *fdtdec_get_compatible(enum fdt_compat_id id)