i2c: qcom-cci: drop custom suspend/resume and rely on runtime PM helpers

cci_resume() unconditionally calls cci_resume_runtime() regardless of
the runtime PM state.

If the device is already runtime-suspended before system suspend,
the clock is re-enabled while runtime_status remains RPM_SUSPENDED.
As a result, pm_request_autosuspend() does not arm the timer,
leaving the clock permanently enabled.

Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver")
Signed-off-by: Wenmeng Liu <wenmeng.liu@oss.qualcomm.com>
Cc: <stable@vger.kernel.org> # v5.8+
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260625-cci-v1-1-a100cda673ce@oss.qualcomm.com

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