EDAC/amd64: Avoid a -Wformat-security warning

Using a variable as a format string causes a (default-disabled) warning:

  drivers/edac/amd64_edac.c: In function 'per_family_init':
  drivers/edac/amd64_edac.c:3914:17: error: format not a string literal and no format arguments [-Werror=format-security]
   3914 |                 scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), tmp_name);
        |                 ^~~~~~~~~

The code here is safe, but in order to enable the warning by default in the
future, change this instance to pass the name indirectly.

Fixes: e9abd99 ("EDAC/amd64: Generate ctl_name string at runtime")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Avadhut Naik <avadhut.naik@amd.com>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Reviewed-by: Yazen Ghannam <yazen.ghannam@amd.com>
Link: https://patch.msgid.link/20251204100231.1034557-1-arnd@kernel.org

Author: arndb

drivers/edac/amd64_edac.c

@@ -3911,7 +3911,7 @@ static int per_family_init(struct amd64_pvt *pvt)
 	}
 
 	if (tmp_name)
-		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), tmp_name);
+		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), "%s", tmp_name);
 	else
 		scnprintf(pvt->ctl_name, sizeof(pvt->ctl_name), "F%02Xh_M%02Xh",
 			  pvt->fam, pvt->model);