board: emulation: New board qemu-xtensa

Introduce the new board, define every bits.

Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
diff --git a/board/emulation/qemu-xtensa/MAINTAINERS b/board/emulation/qemu-xtensa/MAINTAINERS
new file mode 100644
index 0000000..6ffdfe8
--- /dev/null
+++ b/board/emulation/qemu-xtensa/MAINTAINERS
@@ -0,0 +1,8 @@
+QEMU XTENSA 'VIRT' BOARD
+M:	Jiaxun Yang <jiaxun.yang@flygoat.com>
+M:	Max Filippov <jcmvbkbc@gmail.com>
+S:	Maintained
+F:	board/emulation/qemu-xtensa/
+F:	board/emulation/common/
+F:	include/configs/qemu-xtensa.h
+F:	configs/qemu-xtensa-dc233c_defconfig