Merge pull request #386 from sharidas/qemuppc-fix

Revert "runqemu.in: qemu-system-ppc is required in build directory"
runqemu.in: Improvise the conditional check for readability

Improving the conditional check for readability. Rather than
checking for qemu-system-arm just use wild card qemu-system-*

Signed-off-by: Sujith H <Sujith_Haridasan@mentor.com>