Add package patches to RPMs

This commit adds all patches mentioned in components configuration
to RPMs, so that they are applied during build (on %prep stage).

Package patches were ignored since we started building RPMs
from custom specs (commit:da861bc).

Change-Id: Idca0e7cf1c67d12ff27cc5374cfbf0ce6e5d6a3b
Fixes: bug #1190429