UBUNTU: [Config]: disable CONFIG_GDS_FORCE_MITIGATION

UBUNTU: [Config]: disable CONFIG_GDS_FORCE_MITIGATION

BugLink: https://bugs.launchpad.net/bugs/2031093
That option will disable AVX on systems where microcode mitigation has not
been provided. Though it can be flipeed by a boot option, it has been shown
to break some versions of gnutls, which are used by apt or git when dealing
with https.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>