mtd: rawnand: jz4780: Drop the dependency on MACH_JZ4780

This MACH_JZ4780 dependency is taken care of by JZ4780_NEMC, no need
to repeat it here.
Signed-off-by: NBoris Brezillon <boris.brezillon@bootlin.com>
Acked-by: NPaul Burton <paul.burton@mips.com>
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>

drivers/mtd/nand/raw/Kconfig

@@ -497,7 +497,7 @@ config MTD_NAND_JZ4740
 
 config MTD_NAND_JZ4780
 	tristate "Support for NAND on JZ4780 SoC"
-	depends on MACH_JZ4780 && JZ4780_NEMC
+	depends on JZ4780_NEMC
 	help
 	  Enables support for NAND Flash connected to the NEMC on JZ4780 SoC
 	  based boards, using the BCH controller for hardware error correction.