board: ti: dra76-evm: Add support for powering on mmc ldo

ldo4 is used to poweron mmc on dra76-evm. Enable it.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

board/ti/dra7xx/evm.c

@@ -837,6 +837,8 @@ void board_mmc_poweron_ldo(uint voltage)
 		else if (voltage == LDO_VOLT_1V8)
 			voltage = 0xa;
 		lp873x_mmc1_poweron_ldo(voltage);
+	} else if (board_is_dra76x_evm()) {
+		palmas_mmc1_poweron_ldo(LDO4_VOLTAGE, LDO4_CTRL, voltage);
 	} else {
 		palmas_mmc1_poweron_ldo(LDO1_VOLTAGE, LDO1_CTRL, voltage);
 	}

include/palmas.h

@@ -38,6 +38,10 @@
 #define LDO2_CTRL		0x52
 #define LDO2_VOLTAGE		0x53
 
+/* LDO2 control/voltage */
+#define LDO4_CTRL		0x5e
+#define LDO4_VOLTAGE		0x5f
+
 /* LDO9 control/voltage */
 #define LDO9_CTRL		0x60
 #define LDO9_VOLTAGE		0x61