MAINTAINERS: add xtfpga platform section

This section will list xtfpga platform-specific drivers.
Signed-off-by: NMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

MAINTAINERS

@@ -9740,6 +9740,12 @@ L:	linux-serial@vger.kernel.org
 S:	Maintained
 F:	drivers/tty/serial/uartlite.c
 
+XTENSA XTFPGA PLATFORM SUPPORT
+M:	Max Filippov <jcmvbkbc@gmail.com>
+L:	linux-xtensa@linux-xtensa.org
+S:	Maintained
+F:	drivers/spi/spi-xtensa-xtfpga.c
+
 YAM DRIVER FOR AX.25
 M:	Jean-Paul Roubelat <jpr@f6fbb.org>
 L:	linux-hams@vger.kernel.org