Revert "ARM: 7835/2: fix modular build of xor_blocks() with NEON enabled"

This reverts commit 2ba8d7798267da24480dfcec00a5ade71d70dffc.

Change-Id: Ia1ed296c39692c514c052da49cd7019c782c6d84
Merge "Revert "ARM: 7835/2: fix modular build of xor_blocks() with NEON enabled"" into du44