package/binutils: fix building or1k with host gcc version < 5

package/binutils: fix building or1k with host gcc version < 5

Add patches to fix building on hosts that provide gcc version < 5
(i.e. 4.9), otherwise they fail due to missing default '-std=gnu11' option
on variable declaration inside for loops.

The patch is pending upstream:
https://sourceware.org/pipermail/binutils/2021-June/116884.html

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>