ARM: DRA7x/AM57xx: Get rid of CONFIG_AM57XX

CONFIG_AM57XX is just an unnecessary macro that is redundant given So,
remove the same instead of spreading through out the u-boot source
code and getting in the way to maintain common code for DRA7x family.

Acked-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/usb/dwc3/ti_usb_phy.c b/drivers/usb/dwc3/ti_usb_phy.c
index 4159e5a..218a8e5 100644
--- a/drivers/usb/dwc3/ti_usb_phy.c
+++ b/drivers/usb/dwc3/ti_usb_phy.c
@@ -193,7 +193,7 @@
 	val = readl(phy->usb2_phy_power);
 
 	if (on) {
-#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
+#if defined(CONFIG_DRA7XX)
 		if (phy->index == 1)
 			val &= ~OMAP_CTRL_USB2_PHY_PD;
 		else
@@ -205,7 +205,7 @@
 			AM437X_CTRL_USB2_OTGSESSEND_EN);
 #endif
 	} else {
-#if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
+#if defined(CONFIG_DRA7XX)
 		if (phy->index == 1)
 			val |= OMAP_CTRL_USB2_PHY_PD;
 		else