spi: add spi-mem driver for MediaTek MT7629 SoC

This patch adds spi-mem driver for MediaTek MT7629 SoC
to access SPI-NOR and SPI-NAND flashes.

[jagan: squash MAINTAINERS file]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index bc67c49..fe6ca4e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -206,6 +206,7 @@
 F:	drivers/power/domain/mtk-power-domain.c
 F:	drivers/ram/mediatek/
 F:	drivers/spi/mtk_qspi.c
+F:	drivers/spi/mtk_snfi_spi.c
 F:	drivers/timer/mtk_timer.c
 F:	drivers/watchdog/mtk_wdt.c
 F:	drivers/net/mtk_eth.c