am335x: add mux config for DDR3 version of beaglebone

This fixes the following boothang in SPL:

	Unknown board, cannot configure pinmux.### ERROR ### Please RESET the board ###

Future commits will add pinmuxes for more on-board peripherals.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

board/ti/am335x/mux.c

@@ -256,6 +256,12 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header)
 		configure_module_pin_mux(gpio0_7_pin_mux);
 		configure_module_pin_mux(rgmii1_pin_mux);
 		configure_module_pin_mux(mmc0_pin_mux_sk_evm);
+	} else if (!strncmp(header->name, "A335BNLT", HDR_NAME_LEN)) {
+		/* Beaglebone LT pinmux */
+		configure_module_pin_mux(i2c1_pin_mux);
+		configure_module_pin_mux(mii1_pin_mux);
+		configure_module_pin_mux(mmc0_pin_mux);
+		configure_module_pin_mux(mmc1_pin_mux);
 	} else {
 		puts("Unknown board, cannot configure pinmux.");
 		hang();