GCC changes for Fedora + riscv64

[Jeff Law]

On 04/09/2018 11:01 PM, Kito Cheng wrote:
> Hi Jeff:
> 
> You can use -r option (e.g. ./qemu-riscv64 -r 4.15) or set QEMU_UNAME
> environment variable to change the uname for qemu.
That did the trick.  Exactly what I needed.

Thanks!

jeff