ARM: sun7i: Add mod1 clock nodes

This commit adds all the mod1 clocks available on A20 to its device
tree. This list was created by looking at the A20 user manual.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>