git-hooks: Fix install script for various git versions

There are older versions of git-rev-parse that don't understand the
`--git-path` switch. Also, when the install script was written, git-
rev-parse had a bug when it wasn't run from the root directory. They
fixed the behaviour by now. To simplify things and not have to account
for that too, we just bail out when the script is run from a sub-
directory.

Change-Id: I7ee8d4d54db48f7207fe8abf895c7fbba7685ad2
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/22971
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
1 file changed