board: atmel: add sama5d27_wlsom1_ek board

Add support for the SAMA5D27-WLSOM1-EK. It's based on the Microchip
WireLess SoM which contains the SAMa5D27 LPDDR2 2Gbits SiP.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
[eugen.hristev@microchip.com]: added u-boot specific dtsi and ported to 2019.10
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
diff --git a/board/atmel/sama5d27_wlsom1_ek/MAINTAINERS b/board/atmel/sama5d27_wlsom1_ek/MAINTAINERS
new file mode 100644
index 0000000..59671ac
--- /dev/null
+++ b/board/atmel/sama5d27_wlsom1_ek/MAINTAINERS
@@ -0,0 +1,7 @@
+SAMA5D27 WLSOM1 EK BOARD
+M:	Nicolas Ferre <nicolas.ferre@microchip.com>
+M:	Eugen Hristev <eugen.hristev@microchip.com>
+S:	Maintained
+F:	board/atmel/sama5d27_wlsom1_ek/
+F:	include/configs/sama5d27_wlsom1_ek.h
+F:	configs/sama5d27_wlsom1_ek_mmc_defconfig