qoriq/p1_p2_rdb: Add Dual Role USB support macro for P1020RDB

Add CONFIG_HAS_FSL_DR_USB macro for P1020RDB
Signed-off-by: NRamneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

include/configs/P1_P2_RDB.h

@@ -601,6 +601,7 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
 #define CONFIG_USB_EHCI_FSL
 #define CONFIG_USB_STORAGE
+#define CONFIG_HAS_FSL_DR_USB
 #endif
 
 #if defined(CONFIG_MMC) || defined(CONFIG_USB_EHCI)