minor fixes for erst test

1) in the last patch after update makefile rule, I forget to update
   corresponding shell script. And the shell script mode attribute is
   not correct, too
2) update erst-inject tool to provide more friendly prompt

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
2 files changed