phy: apple: atc: Make atcphy_dwc3_reset_ops variable static

phy: apple: atc: Make atcphy_dwc3_reset_ops variable static

File-scope 'atcphy_dwc3_reset_ops' is not used outside of this unit, so
make it static to silence sparse warning:

  atc.c:2026:32: warning: symbol 'atcphy_dwc3_reset_ops' was not declared. Should it be static?

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Janne Grunau <j@jannau.net>
Link: https://patch.msgid.link/20260216110413.159994-4-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>