coral: change patchsrc1 to patchsrc

patchsrc1 does not exist. It starts with patchsrc, then patchsrc2,
patchsrc3, etc.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Merge pull request #197 from davidlt/fix-coral-patchsrc

coral: change patchsrc1 to patchsrc