mfd: Add 8420 variant to db8500-prcmu

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h
index 19ea0a6..b3a43b1 100644
--- a/include/linux/mfd/db8500-prcmu.h
+++ b/include/linux/mfd/db8500-prcmu.h
@@ -498,6 +498,7 @@
 #define PRCMU_FW_PROJECT_U8500_C2	7
 #define PRCMU_FW_PROJECT_U9500_C2	11
 #define PRCMU_FW_PROJECT_U8520		13
+#define PRCMU_FW_PROJECT_U8420		14
 
 struct prcmu_fw_version {
 	u8 project;