[UBSan][sbc] Temporarily disable UBSan

UBSan was reporting a left shift of a negative value. Disable UBSan for this
target for now, then we will come back to fix it once asan-ubsan is
migrated into CQ.

Bug: 46738
Change-Id: I1a55c22d4cbc676f9982ee46bd580a17189a4893
1 file changed
tree: e44a89b105198b1885db4271ff01d6632c0f56b5
  1. NOTICE
  2. embdrv/