mx7dsabresd: 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/mx7dsabresd/mx7dsabresd.c

@@ -264,7 +264,7 @@ int power_init_board(void)
 	struct udevice *dev;
 	int ret, dev_id, rev_id;
 
-	ret = pmic_get("pfuze3000", &dev);
+	ret = pmic_get("pfuze3000@08", &dev);
 	if (ret == -ENODEV)
 		return 0;
 	if (ret != 0)