Temporarily disable text relocation warnings for x86 libraries

Too many such warnings will cause CTS failed. This issue still exists
in some x86 version libraries: libdvm.so/libart.so.

$scanelf -qT out/target/product/generic_x86/system/lib/libdvm.so
  libdvm.so: (memory/data?) [0x2BAC7] in (optimized out: previous dvmAsmInstructionStartCode) [0x2B2F8]
  libdvm.so: (memory/data?) [0x2BB98] in (optimized out: previous dvmAsmInstructionStartCode) [0x2B2F8]
  libdvm.so: (memory/data?) [0x2EB28] in (optimized out: previous dvmAsmInstructionStartCode) [0x2B2F8]
  libdvm.so: (memory/data?) [0x2EF87] in (optimized out: previous dvmAsmInstructionEndCode) [0x2EF63]
  libdvm.so: (memory/data?) [0x2EFAF] in (optimized out: previous dvmAsmInstructionEndCode) [0x2EF63]
  libdvm.so: (memory/data?) [0x2EFD7] in (optimized out: previous dvmAsmInstructionEndCode) [0x2EF63]
  libdvm.so: (memory/data?) [0x2EFFF] in (optimized out: previous dvmAsmInstructionEndCode) [0x2EF63]
  libdvm.so: (memory/data?) [0x2F027] in (optimized out: previous dvmAsmInstructionEndCode) [0x2EF63]

Bug: https://code.google.com/p/android/issues/detail?id=68431
Change-Id: I11ecac282f1163e49a82156fce2a76cc2d619960

Conflicts:

	linker/linker.cpp