MAINTAINERS: add include/linux/platform_data/pic32.h to MIPS entry

Add the file include/linux/platform_data/pic32.h to the MIPS maintainer
entry.

Signed-off-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Author: masneyb

MAINTAINERS

@@ -17485,6 +17485,7 @@ F:	Documentation/arch/mips/
 F:	arch/mips/
 F:	drivers/platform/mips/
 F:	include/dt-bindings/mips/
+F:	include/linux/platform_data/pic32.h
 
 MIPS BOSTON DEVELOPMENT BOARD
 M:	Paul Burton <paulburton@kernel.org>