ANDROID: Revert "arm64: move ELF_ET_DYN_BASE to 4GB / 4MB"

Part of the above change was reverted in c715b72c;
this change reverts the rest.

This ARM mmap change breaks AddressSanitizer:

Shadow memory range interleaves with an existing memory mapping. ASan cannot proceed correctly. ABORTING.

Revert it until ASAN runtime library is updated to handle it.

Bug: 67425063

Signed-off-by: Evgenii Stepanov <eugenis@google.com>

[AmitP: Updated the commit ID of the upstream commit]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>