MAINTAINERS: add tree entry for ARM/UniPhier architecture

Add T: entry for a new git tree, which I expect UniPhier SoC
updates will be pulled from.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
1 file changed