board: asus: transformer: add ASUS Transformer T30 family support

The ASUS Transformer T30 family are 2-in-1 detachable tablets
and AiO developed by ASUS that run the Android operating system
(TF600T runs Windows RT and P1801-T runs Android and Windows).
The T30 Transformers feature a 10.1-inch display (apart P1801-T),
an Nvidia Tegra 3 quad-core chip, 1/2 GB of RAM, and 16/32 GB of
storage. Transformers board derives from Nvidia Cardhu development
board.

This patch brings support for 7 known Transformer devices:
- ASUS Transformer Prime TF201
- ASUS Transformer Pad TF300T/TF300TG/TF300TL
- ASUS VivoTab RT TF600T (Windows RT based)
- ASUS Transformer Infinity TF700T
- ASUS Portable AiO P1801-T

Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # all devices
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/board/asus/transformer-t30/MAINTAINERS b/board/asus/transformer-t30/MAINTAINERS
new file mode 100644
index 0000000..c6c1532
--- /dev/null
+++ b/board/asus/transformer-t30/MAINTAINERS
@@ -0,0 +1,15 @@
+TRANSFORMER BOARD
+M:	Svyatoslav Ryhel <clamor95@gmail.com>
+S:	Maintained
+F:	board/asus/transformer-t30/
+F:	configs/p1801-t.config
+F:	configs/tf201.config
+F:	configs/tf300t.config
+F:	configs/tf300tg.config
+F:	configs/tf300tl.config
+F:	configs/tf600t.config
+F:	configs/tf700t.config
+F:	configs/transformer_t30_defconfig
+F:	doc/board/asus/transformer_t30.rst
+F:	include/configs/transformer-common.h
+F:	include/configs/transformer-t30.h