Attempt to fix nightly builds

The fix introduced in dac5867af5ff90d4beb70fc30a5743f60f159e3a did not
work because autotools in our OE are too old. Use alternative way to
include custom m4 macros to fix it.

Change-Id: I5fe6d1180c2624cfe1d3673314f6846527a43464
2 files changed
tree: 44239f965dca53e2620fad6e4402cfcaae1a3a8f
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap