In scripts/Makefile.qemu, the target qemu is already an alias for taget run.
In scripts/Makefile.xt{,sc}-run there is no target qemu but a target run.
Change-Id: Ib9dce3561ef9367b17d30070354e709df4d7e528
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>