pmic: dialog: Avoid name conflicts

As mx53loco board has two variants: one with Dialog PMIC and another with FSL MC34708 PMIC,
we need to be able to build both drivers.

Change pmic_init() and PMIC_NUM_OF_REGS names to avoid build conflicts when both drivers are present.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/include/dialog_pmic.h b/include/dialog_pmic.h
index b0925f5..8d43585 100644
--- a/include/dialog_pmic.h
+++ b/include/dialog_pmic.h
@@ -164,7 +164,7 @@
 	DA9053_GPID7_REG,
 	DA9053_GPID8_REG,
 	DA9053_GPID9_REG,
-	PMIC_NUM_OF_REGS,
+	DIALOG_NUM_OF_REGS,
 };
 
 #define DA_BUCKCORE_VBCORE_1_250V		0x1E