MAINTAINERS: Add a missing entry for the Xilinx S3A-DSP 1800 machine

Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20181125205000.10324-7-philmd@redhat.com>
[lv: added the missing 'F:' field]
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

MAINTAINERS

@@ -852,6 +852,7 @@ petalogix_s3adsp1800
 M: Edgar E. Iglesias <edgar.iglesias@gmail.com>
 S: Maintained
 F: hw/microblaze/petalogix_s3adsp1800_mmu.c
+F: include/hw/char/xilinx_uartlite.h
 
 petalogix_ml605
 M: Edgar E. Iglesias <edgar.iglesias@gmail.com>