sys-kernel/gentoo-sources: Linux patch 5.4.0 and additional patches

sys-kernel/gentoo-sources: Linux patch 5.4.0 and additional patches

Patch to support for namespace user.pax.* on tmpfs.
Enable link security restrictions by default.
Add UAS disable quirk. See bug #640082.
hid-apple patch to enable swapping of the FN and left Control
keys and on some apple keyboards. See bug #622902.
Kernel patch enables gcc >= v4.13 optimizations for additional
CPUs. Kernel patch enables gcc >= v9.1 optimizations for
additional CPUs.

Package-Manager: Portage-2.3.76, Repoman-2.3.16
Signed-off-by: Mike Pagano <mpagano@gentoo.org>