jingli 7211b0a89a esp_hw_support/sleep: fix cannot pd cpu and rc fast at the same time during light sleep ...

Since cpu retention dma use rc fast as clk source, so rc_fast_digi
will be enabled when we config to pd cpu. And cpu retention does not
need rc fast keep on during light sleep. So, if we use rc_fast_digi
to determine whether rc fast can be powered down, then cpu and and
rc fast cannot pd at the same time.

2022-07-28 11:10:58 +08:00

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