EDAC/skx_common: Prepare for skx_set_hi_lo()

EDAC/skx_common: Prepare for skx_set_hi_lo()

The upcoming imh_edac driver for Intel Diamond Rapids servers cannot
use skx_get_hi_lo() in skx_common to retrieve the TOHM (Top of High
Memory) and TOLM (Top of Low Memory) parameters. Instead, it obtains
these parameters within its own EDAC driver. To accommodate this,
prepare skx_set_hi_lo() to allow the driver to notify skx_common of
these parameters.

Tested-by: Yi Lai <yi1.lai@intel.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://patch.msgid.link/20251119134132.2389472-4-qiuxu.zhuo@intel.com