LAKITU: Set EGIT_MASTER=main for some llvm packages

The master branch has been removed from github.com/llvm/llvm-project.
This breaks git-2.eclass. We need to set EGIT_MASTER=main now for these
packages.

I'm making this patch to fix the build. I will try to see how ChromeOS
is resolving this after the build is fixed.

BUG=b/178727618
TEST=emerge-lakitu --root-deps=rdeps --select --quiet sys-libs/libcxx
RELEASE_NOTE=None

Change-Id: I201bdeb042f96fea79e6434041bf2bbf579caad9
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/11510
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Dexter Rivera <riverade@google.com>
3 files changed