warp7: Fix the write to the LDOGCTL PMIC register

The third parameter of the pmic_clrsetbits() function is the mask
to the register and the correct mask is 1 not 0.

Since the LDOGCTL only contains a single valid bit (bit 0),
we can use pmic_reg_write() and write 1 directly, which fixes
the problem in a simpler way and use the original pmic function
that was used prior to the DM PMIC conversion.

Fixes: 8ba377321c ("arm: imx7s-warp: Convert to DM PMIC")
Signed-off-by: Fabio Estevam <festevam@gmail.com>

board/warp7/warp7.c

@@ -77,7 +77,7 @@ int power_init_board(void)
 	printf("PMIC: PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", dev_id, rev_id);
 
 	/* disable Low Power Mode during standby mode */
-	pmic_clrsetbits(dev, PFUZE3000_LDOGCTL, 0, 1);
+	pmic_reg_write(dev, PFUZE3000_LDOGCTL, 1);
 
 	return 0;
 }