spi: spi-cadence: Use helper function devm_clk_get_enabled()

[ Upstream commit f64b1600 ]

Since commit 7ef9651e ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover, it is
no longer necessary to unprepare and disable the clocks explicitly.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230823133938.1359106-9-lizetao1@huawei.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Stable-dep-of: 67d4a70f ("spi: spi-cadence: Fix pm_runtime_set_suspended() with runtime pm enabled")
Signed-off-by: Sasha Levin <sashal@kernel.org>