Add ene-ub6250 SD card reader firmware

Move ENE UB6250 SD/MS card firmware from driver/staging/keucr, and
convert it from HEX to using request_firmware()
Most for this patch is from huajun.li.lee@gmail.com sent at
2011-03-02,only added the ms card reader firmware and LICENCE of
firmware from ENE.

Signed-off-by: Cho, Yu-Chen <acho@novell.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>