mei: me: add lunar lake point M DID

Add Lunar (Point) Lake M device id.

xe-for-ci note: this patch is being reviewed for merge via the char-misc
tree [1]. We need this for LNL GSC proxy, so we're pulling it early to
the xe-for-ci tree to unblock our LNL execution.

[1] https://lore.kernel.org/all/[email protected]/T/

Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1758
Signed-off-by: Alexander Usyskin <[email protected]>
Signed-off-by: Tomas Winkler <[email protected]>
Signed-off-by: Daniele Ceraolo Spurio <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Lucas De Marchi <[email protected]>

Author: ausyskin

drivers/misc/mei/hw-me-regs.h

@@ -115,6 +115,8 @@
 #define MEI_DEV_ID_ARL_S      0x7F68  /* Arrow Lake Point S */
 #define MEI_DEV_ID_ARL_H      0x7770  /* Arrow Lake Point H */
 
+#define MEI_DEV_ID_LNL_M      0xA870  /* Lunar Lake Point M */
+
 /*
  * MEI HW Section
  */

drivers/misc/mei/pci-me.c

@@ -122,6 +122,8 @@ static const struct pci_device_id mei_me_pci_tbl[] = {
 	{MEI_PCI_DEVICE(MEI_DEV_ID_ARL_S, MEI_ME_PCH15_CFG)},
 	{MEI_PCI_DEVICE(MEI_DEV_ID_ARL_H, MEI_ME_PCH15_CFG)},
 
+	{MEI_PCI_DEVICE(MEI_DEV_ID_LNL_M, MEI_ME_PCH15_CFG)},
+
 	/* required last entry */
 	{0, }
 };