sys-kernel/gentoo-sources: Linux 5.5 and additional patches detailed below

sys-kernel/gentoo-sources: Linux 5.5 and additional patches detailed below

Support for namespace user.pax.* on tmpfs.
Enable link security restrictions by default.
Bluetooth: Check key sizes only when Secure Simple Pairing is
enabled. See bug #686758.This hid-apple patch enables swapping
of the FN and left Control keys and some additional on some
apple keyboards. See bug #622902.Add Gentoo Linux support
config settings and defaults.  Kernel patch for >= gccv8 enables
kernel >= v4.13 optimizations for additional CPUs.
Kernel patch enables gcc >= v9.1 optimizations for additional CPUs.

Package-Manager: Portage-2.3.84, Repoman-2.3.20
Signed-off-by: Mike Pagano <mpagano@gentoo.org>