usb: fsl: Rename fdt_fixup_dr_usb

The function fdt_fixup_dr_usb is specific to fsl/nxp. So,
make the function name explicit and rename fdt_fixup_dr_usb
into fsl_fdt_fixup_dr_usb.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
diff --git a/board/freescale/t4rdb/t4240rdb.c b/board/freescale/t4rdb/t4240rdb.c
index 406fb13..bdd6f4e 100644
--- a/board/freescale/t4rdb/t4240rdb.c
+++ b/board/freescale/t4rdb/t4240rdb.c
@@ -107,7 +107,7 @@
 #endif
 
 	fdt_fixup_liodn(blob);
-	fdt_fixup_dr_usb(blob, bd);
+	fsl_fdt_fixup_dr_usb(blob, bd);
 
 #ifdef CONFIG_SYS_DPAA_FMAN
 	fdt_fixup_fman_ethernet(blob);