mx6slevk: Fix the pmic_get() parameter in the DM case

When pmic_get() is used with DM the first parameter must be
the complete node name plus the unit address, so fix it
accordingly.
Reported-by: NIgor Opaniuk <igor.opaniuk@toradex.com>
Signed-off-by: NFabio Estevam <festevam@gmail.com>
Reviewed-by: NPeng Fan <peng.fan@nxp.com>

board/freescale/mx6slevk/mx6slevk.c

@@ -145,7 +145,7 @@ int power_init_board(void)
 	u32 switch_num = 6;
 	u32 offset = PFUZE100_SW1CMODE;
 
-	ret = pmic_get("pfuze100", &dev);
+	ret = pmic_get("pfuze100@08", &dev);
 	if (ret == -ENODEV)
 		return 0;