serial: qcom-geni: move resource initialization to separate function

Enhances code readability and future modifications within the new API.

Move the code that handles the actual initialization of resources
like clock and ICC paths to a separate function, making the
probe function cleaner.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Praveen Talari <quic_ptalari@quicinc.com>
Link: https://lore.kernel.org/r/20250721174532.14022-5-quic_ptalari@quicinc.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>