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/pmic.h b/include/pmic.h
index 52a1526..6a05b40 100644
--- a/include/pmic.h
+++ b/include/pmic.h
@@ -55,6 +55,7 @@
 };
 
 int pmic_init(void);
+int pmic_dialog_init(void);
 int check_reg(u32 reg);
 struct pmic *get_pmic(void);
 int pmic_probe(struct pmic *p);