package/binutils: add support for binutils 2.32

package/binutils: add support for binutils 2.32

Remove upstream ARC and Xtensa patches.
Keep all other patches from binutils 2.31.1.

See the release note:
https://sourceware.org/ml/binutils/2019-02/msg00010.html

While testing the Binutils 2.32 version bump, the Qemu xtensa
defconfig (that was using a kernel 4.16) needed to be updated with a
patch [1] from kernel 4.19 otherwise the kernel doesn't boot with
binutils 2.32 [2].

Since then, all Qemu defconfig has been updated by commit [3] to use a
4.19 kernel, so the issue no longer exists.

All other architectures has been tested using toolchain-builder [4].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4119ba211bc4f1bf638f41e50b7a0f329f58aa16
[2] https://www.sourceware.org/ml/binutils/2019-02/msg00015.html
[3] fd8a02fd75d652b85f64c1cd7e9adf1ee2329261
[4] https://gitlab.com/kubu93/toolchains-builder/pipelines/45896638

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>