This reverts commit 4db8466a14.

branch 22.03 has GCC 11.2

Signed-off-by: Rosen Penev <rosenp@gmail.com>

- Update 11 minor version to match the upstream
- Rename patches dir to reflect new gcc 11 minor version
- Drop upstream patch

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 4db8466a14)

This is based on the toolchain GCC, and aims to share as much of its
Makefile and patches with that definition. The package requires two
additional patches:

(1) 003-dont-choke-when-building-32bit-on-64bit.patch, which fixes the
`error: size of array 'test_real_width' is negative` error that occurs
when building a 32-bit GCC on a 64-bit host. (Search the Internet for
examples of this error appearing.)

(2) 980-add-nostdinc++.patch, which backports a fix from 11.3.0 (11.2.0
only).

Signed-off-by: W. Michael Petullo <mike@flyn.org>
(cherry picked from commit ceaa6e840e)