fdtdec: Add compatible string for Intel IvyBridge FSP

Use "intel,ivybridge-fsp" for Intel IvyBridge FSP compatible string.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/include/fdtdec.h b/include/fdtdec.h
index d82dc35..5e724a9 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -170,6 +170,7 @@
 	COMPAT_ALTERA_SOCFPGA_DWC2USB,	/* SoCFPGA DWC2 USB controller */
 	COMPAT_INTEL_BAYTRAIL_FSP,	/* Intel Bay Trail FSP */
 	COMPAT_INTEL_BAYTRAIL_FSP_MDP,	/* Intel FSP memory-down params */
+	COMPAT_INTEL_IVYBRIDGE_FSP,	/* Intel Ivy Bridge FSP */
 
 	COMPAT_COUNT,
 };