Makefile: add missing hpl/rtc directory

Change-Id: I3fed159173467d1da091758fe2a87bef2cd2e3c7
1 file changed
tree: 8df011a24255e2a15e54f5d2c4f1a6fa883dbf13
  1. ccid/
  2. contrib/
  3. sysmoOCTSIM/
  4. git-version-gen