Add support for a new Micron 2Gb Flash memory part.
Datasheet is available: mt25q_qlkt_l_02g_cbb_0.pdf

Testing was done on a Stratix10 SoCFPGA Development Kit.
Reported-by: NSujith Chidurala <sujith.chakra.chidurala@intel.com>
Tested-by: NPaul Kim <paul.kim@intel.com>
Signed-off-by: NThor Thayer <thor.thayer@linux.intel.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com>