[compiler-rt] [tsan] Add support for PIE build on AArch64

This patch adds PIE executable support for aarch64-linux.  It adds
two more segments:

- 0x05500000000-0x05600000000: 39-bits PIE program segments
- 0x2aa00000000-0x2ab00000000: 42-bits PIE program segments

Fortunately it is possible to use the same transformation formula for
the new segments range with some adjustments in shadow to memory
formula (it adds a constant offset based on the VMA size).

A simple testcase is also added, however it is disabled on x86 due the
fact it might fail on newer kernels [1].

[1] https://git.kernel.org/linus/d1fd836dcf00d2028c700c7e44d2c23404062c90

llvm-svn: 256184