phy: Kconfig: spacemit: add COMMON_CLK dependency

phy: Kconfig: spacemit: add COMMON_CLK dependency

The SpacemiT PCIe PHY driver depends on the common clock framework.
Not specifying that led to a failure when doing a COMPILE_TEST build
for the SPARC architecture.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202512251903.sTVZgg6c-lkp@intel.com/
Signed-off-by: Alex Elder <elder@riscstar.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patch.msgid.link/20251226173228.2020411-1-elder@riscstar.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>