The variable name is misleading, as the deep suspend mode always switches
the main supplying clock to the 32kHz source. Additionally the main
oscillator remains running in some cases, which this var indicates.

So rename it to osc_disable to clarity.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Reviewed-by: NChris Zhong <zyw@rock-chips.com>
Tested-by: NChris Zhong <zyw@rock-chips.com>
Reviewed-by: NDouglas Anderson <dianders@chromium.org>