power: act8846_pmic: fix number of registers

The highest register on ACT8846 is 0xf5, so set the number of registers
to 0xf6, ensuring that the pmic read/write commands are able to access
all of the supported registers (and many that are not valid, since the
register space is quite sparse).

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/include/power/act8846_pmic.h b/include/power/act8846_pmic.h
index acd0fd6..84845c7 100644
--- a/include/power/act8846_pmic.h
+++ b/include/power/act8846_pmic.h
@@ -9,7 +9,7 @@
 
 #include <asm/gpio.h>
 
-#define ACT8846_NUM_OF_REGS	12
+#define ACT8846_NUM_OF_REGS	0xf6
 
 #define BUCK_VOL_MASK 0x3f
 #define LDO_VOL_MASK 0x3f