MAINTAINERS: rectify MMP SUPPORT after moving cputype.h

Commit 32adcaa0 ("ARM: mmp: move cputype.h to include/linux/soc/")
added a file entry that does not point to the intended file location.

Since then, ./scripts/get_maintainer.pl --self-test complains:

  warning: no file matches F: linux/soc/mmp/

Rectify the MAINTAINERS entry now.

Fixes: 32adcaa0 ("ARM: mmp: move cputype.h to include/linux/soc/")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

MAINTAINERS

@@ -11638,7 +11638,7 @@ S:	Odd Fixes
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lkundrak/linux-mmp.git
 F:	arch/arm/boot/dts/mmp*
 F:	arch/arm/mach-mmp/
-F:	linux/soc/mmp/
+F:	include/linux/soc/mmp/
 
 MMP USB PHY DRIVERS
 R:	Lubomir Rintel <lkundrak@v3.sk>