Mark libF77blas as vendor_available

This is required by libblas, which is a vndk-sp library. Since this is a
static library, vendor_available: true is enough.

Bug: 64425518
Test: BOARD_VNDK_VERSION=current m -j libblas.vendor

Change-Id: I496a1f150719c15ac1c50508ebf9a097c5630347
1 file changed