ARM: AM43xx: GP-EVM: Correct GPIO used for VTT regulator control

Schematic indicates GPIO5_7 is to be used for VTT regulator control
rather than GPIO0_21 so modify enable_vtt_regulator to reflect this.
Without this some boards will experience DDR3 corruption and fail to
boot.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
[trini: Rework patch against mainline]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
index 97c00b4..440cf8b 100644
--- a/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
+++ b/arch/arm/cpu/armv7/am33xx/clock_am43xx.c
@@ -94,6 +94,8 @@
 		&cmper->gpio1clkctrl,
 		&cmper->gpio2clkctrl,
 		&cmper->gpio3clkctrl,
+		&cmper->gpio4clkctrl,
+		&cmper->gpio5clkctrl,
 		&cmper->i2c1clkctrl,
 		&cmper->emiffwclkctrl,
 		&cmper->emifclkctrl,