global: Migrate CONFIG_MXC_USB_FLAGS et al to CFG

Perform simple renames of:
   CONFIG_MXC_USB_FLAGS to CFG_MXC_USB_FLAGS
   CONFIG_MXC_USB_PORT to CFG_MXC_USB_PORT
   CONFIG_MXC_USB_PORTSC to CFG_MXC_USB_PORTSC

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/mx6sabreauto.h b/include/configs/mx6sabreauto.h
index 274c14b..da98139 100644
--- a/include/configs/mx6sabreauto.h
+++ b/include/configs/mx6sabreauto.h
@@ -12,8 +12,8 @@
 #define CONSOLE_DEV		"ttymxc3"
 
 /* USB Configs */
-#define CONFIG_MXC_USB_PORTSC	(PORT_PTS_UTMI | PORT_PTS_PTW)
-#define CONFIG_MXC_USB_FLAGS	0
+#define CFG_MXC_USB_PORTSC	(PORT_PTS_UTMI | PORT_PTS_PTW)
+#define CFG_MXC_USB_FLAGS	0
 
 #define CFG_SYS_I2C_PCA953X_WIDTH	{ {0x30, 8}, {0x32, 8}, {0x34, 8} }