ANDROID: Revert "arm: move ELF_ET_DYN_BASE to 4MB"

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

This reverts commit 6a9af90a.

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

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