mfd: Add 8520 PRCMU variant to db8500-prcmu

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: Mattias Nilssson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@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 a220905..19ea0a6 100644
--- a/include/linux/mfd/db8500-prcmu.h
+++ b/include/linux/mfd/db8500-prcmu.h
@@ -497,6 +497,7 @@
 #define PRCMU_FW_PROJECT_U9500		4
 #define PRCMU_FW_PROJECT_U8500_C2	7
 #define PRCMU_FW_PROJECT_U9500_C2	11
+#define PRCMU_FW_PROJECT_U8520		13
 
 struct prcmu_fw_version {
 	u8 project;