Create dolphin-emu.spec

Cross-distribution spec file to build Linux packages.
Confirmed to work with Fedora, openSUSE, and even CentOS:
https://build.opensuse.org/package/show/home:KAMiKAZOW:Test/dolphin-emu

Mageia should work as well.
Update dolphin-emu.spec

Removed glew-devel
Update dolphin-emu.spec

BuildArch:  x86_64 armv7l aarch64
Merge pull request #1201 from KAMiKAZOW/patch-1

Create dolphin-emu.spec