libpagemap: add static library for pagemap

Bionic unit/cts tests need use static version of libpagemap
to avoid depending on internal android library.

Test: mm && run pagemap_static_test
Bug: http://b/22182538
Change-Id: Ic8b4e74565f77a71540e8cb2c7f9dc67f8d5e10c
1 file changed