MAINTAINERS: Update paths to Ingenic platform code

Support for Ingenic chips has been moved to the generic MIPS platform.
Update the paths accordingly.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

MAINTAINERS

@@ -8595,8 +8595,9 @@ INGENIC JZ47xx SoCs
 M:	Paul Cercueil <paul@crapouillou.net>
 S:	Maintained
 F:	arch/mips/boot/dts/ingenic/
-F:	arch/mips/include/asm/mach-jz4740/
-F:	arch/mips/jz4740/
+F:	arch/mips/generic/board-ingenic.c
+F:	arch/mips/include/asm/mach-ingenic/
+F:	arch/mips/ingenic/Kconfig
 F:	drivers/clk/ingenic/
 F:	drivers/dma/dma-jz4780.c
 F:	drivers/gpu/drm/ingenic/