phy: phy-snps-eusb2: drop unnecessary loop index declarations

phy: phy-snps-eusb2: drop unnecessary loop index declarations

There is already a loop index variable declared at function scope so
drop the unnecessary overloaded loop declarations.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20250523084839.11015-7-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>