package/gcc: add upstream patches that introduce -mcmodel=large option for or1k

package/gcc: add upstream patches that introduce -mcmodel=large option for or1k

Let's add upstream patches introducing -mcmodel=large or1k gcc option that
works in conjunction with previous binutils patch. That option fix binutils
bug 21464[1] allowing to build libgeos with no problem. This way we can
consider buildroot toolchain binutils bug 21464 free.

[1]: https://sourceware.org/bugzilla/show_bug.cgi?id=21464

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Arnout: remove the PATCH M/N parts - cfr. check-package]