spi: orion: Fix clock resource by adding an optional bus clock

On Armada 7K/8K we need to explicitly enable the bus clock. The bus clock
is optional because not all the SoCs need them but at least for Armada
7K/8K it is actually mandatory.

The binding documentation is updating accordingly as well as mentioning
the mandatory clock which was also missing.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Gregory CLEMENT 2018-01-12 11:42:33 +01:00 • committed by Mark Brown
commit 92ae112e47
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