ARM: tegra: clock: Convert global lock to a lock per clock
Give each clock its own lock, and remove all lock traversals from parent to child clocks to prevent AB-BA deadlocks. This brings the locking in line with the common struct clk patches and should make conversion simple. Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Colin Cross <ccross@android.com>
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