mfd: arizona: Add support for new fratio encoding

Newer IP has an expanded encoding for the fratio bits. As the additional
used bits are unused on older IP simply expand the field to the new
size.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

include/linux/mfd/arizona/registers.h

@@ -1702,9 +1702,9 @@
 /*
  * R373 (0x175) - FLL1 Control 5
  */
-#define ARIZONA_FLL1_FRATIO_MASK                 0x0700  /* FLL1_FRATIO - [10:8] */
-#define ARIZONA_FLL1_FRATIO_SHIFT                     8  /* FLL1_FRATIO - [10:8] */
-#define ARIZONA_FLL1_FRATIO_WIDTH                     3  /* FLL1_FRATIO - [10:8] */
+#define ARIZONA_FLL1_FRATIO_MASK                 0x0F00  /* FLL1_FRATIO - [11:8] */
+#define ARIZONA_FLL1_FRATIO_SHIFT                     8  /* FLL1_FRATIO - [11:8] */
+#define ARIZONA_FLL1_FRATIO_WIDTH                     4  /* FLL1_FRATIO - [11:8] */
 #define ARIZONA_FLL1_OUTDIV_MASK                 0x000E  /* FLL1_OUTDIV - [3:1] */
 #define ARIZONA_FLL1_OUTDIV_SHIFT                     1  /* FLL1_OUTDIV - [3:1] */
 #define ARIZONA_FLL1_OUTDIV_WIDTH                     3  /* FLL1_OUTDIV - [3:1] */