edgeport-ti: use request_firmware()

Firmware blob looks like this...
        uint8_t  MajorVersion
        uint8_t  MinorVersion
        __le16   BuildNumber
        uint8_t  data[]

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/firmware/Makefile b/firmware/Makefile
index be3a9e9..a162b29 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -61,6 +61,7 @@
 fw-shipped-$(CONFIG_USB_SERIAL_TI) += ti_3410.fw ti_5052.fw
 fw-shipped-$(CONFIG_USB_SERIAL_EDGEPORT) += edgeport/boot.fw edgeport/boot2.fw \
 					    edgeport/down.fw edgeport/down2.fw
+fw-shipped-$(CONFIG_USB_SERIAL_EDGEPORT_TI) += edgeport/down3.bin
 fw-shipped-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat_loader.fw whiteheat.fw \
 					   # whiteheat_loader_debug.fw
 fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += keyspan_pda/keyspan_pda.fw