x86: dts: Add device tree compatible string for Intel IPC

Add this to the table so that it can be recognised.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 06d4542..65db739 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -72,6 +72,7 @@
 	COMPAT(COMPAT_NXP_PTN3460, "nxp,ptn3460"),
 	COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
 	COMPAT(PARADE_PS8625, "parade,ps8625"),
+	COMPAT(COMPAT_INTEL_LPC, "intel,lpc"),
 };
 
 const char *fdtdec_get_compatible(enum fdt_compat_id id)