usb: dwc3: qcom: simplify with devm_platform_ioremap_resource

Use devm_platform_ioremap_resource() wrapper instead of two calls.  This
allows also dropping local 'res' variable.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240814-b4-cleanup-h-of-node-put-usb-v1-8-95481b9682bc@linaro.org


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