[PATCH v2] mtd: spi-nor: macronix: add support for mx77l51250f

[Tomas Winkler <tomas.winkler@intel.com>]

Add support for mx77l51250f spi-nor chips.

SPI NOR sysfs:

$ cat /sys/bus/spi/devices/spi0.0/spi-nor/partname
mx77l51250f
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
c2751a
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
macronix
$ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp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$ md5sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
36fb8e3e6f82c45bfabea45ec73c08a8
/sys/bus/spi/devices/spi0.0/spi-nor/sfdp

Note: The test_qspi.sh wasn not run as this device in intel setup is used
      for BIOS and platform firmware storage.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
---
V2:
1. This chip supports SFDP, parse it instead of the manual configuration.
2. Add required output of sysfs attributes 

 drivers/mtd/spi-nor/macronix.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 6853ec9ae65d..6c3b4192a8ae 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -100,6 +100,8 @@ static const struct flash_info macronix_nor_parts[] = {
 	{ "mx66u2g45g",	 INFO(0xc2253c, 0, 64 * 1024, 4096)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
 		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
+	{ "mx77l51250f", INFO(0xc2751a, 0, 64 * 1024, 4096)
+		PARSE_SFDP },
 };
 
 static void macronix_nor_default_init(struct spi_nor *nor)
-- 
2.39.0