MAINTAINERS: Add include/hw/sh4/ to SH4 section

get_maintainer.pl now properly recognizes that the files in
include/hw/sh4/ belong to SH4.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

MAINTAINERS

@@ -187,6 +187,7 @@ S: Odd Fixes
 F: target-sh4/
 F: hw/sh4/
 F: disas/sh4.c
+F: include/hw/sh4/
 
 SPARC
 M: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>