This will allow to register, in a single postinstall, multiple hooks.
(From OE-Core master rev: b396138ee081c8f5dddbaab0e374787ba2e31029)
(From OE-Core rev: 3daed9c994d3f092caa9cc6e8bab49ab606cb0a2)
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>