MAINTAINERS: Add header files to CRIS section

etraxfs_dma.h and etraxfs.h in include/hw/cris/ obviously belong
to the CRIS section in MAINTAINERS.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/MAINTAINERS b/MAINTAINERS
index 9e4ca02..a5751a6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -116,6 +116,7 @@
 S: Maintained
 F: target-cris/
 F: hw/cris/
+F: include/hw/cris/
 F: tests/tcg/cris/
 F: disas/cris.c