EDAC, amd64: Add x86cpuid sanity check during init

[ Upstream commit 1bd9900b8301fc505f032c90ea487824cf824e99 ]

Match one of the devices in amd64_cpuids[] before loading the module.
This is an additional sanity check against users trying to load
amd64_edac_mod on unsupported systems.

Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1485537863-2707-9-git-send-email-Yazen.Ghannam@amd.com


[ Get rid of err_ret label, make it a bit more readable this way. ]
Signed-off-by: Borislav Petkov <bp@suse.de>

Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>