DT_MIPS_RLD_MAP2 stores the difference between dynamic
entry address and the address of the _r_debug (used by GDB)
since the dynamic section and target address are on the
different sides of the hole it needs to be adjusted accordingly
Bug: http://b/20658994
Bug: http://b/18051137
Change-Id: I4c5e379e8a4c68f029467df6dc660f81a7013a09