Backporting Patches to GCC 7

[Palmer Dabbelt]

I just submitted two patches against trunk.  I'd like to also have them on the
7 branch, so when 7.2 comes out we'll have them.  These patches only touch the
RISC-V backend, which I'm a maintainer of.  Is there a branch maintainer I'm
supposed to have sign off on the patches or am I meant to just decide on my own
what I should commit?

For reference, here's the patches

284b54c RISC-V: Add -mstrict-align option
70218e8 RISC-V: Unify indention in riscv.md