EDAC/igen6: Add Intel Amston Lake SoCs support

Intel Amston Lake is a series of SoCs tailored for edge computing needs.
The Amston Lake SoCs, equipped with IBECC(In-Band ECC) capability, share
the same IBECC registers with Alder Lake-N SoCs. Add the Intel Amston Lake
SoC compute die ID for EDAC support.

Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20250408132455.489046-4-qiuxu.zhuo@intel.com