Revert "ARM: 7494/1: use generic termios.h"

This reverts commit ae5a08643e3619d2184413603b372399fed7dea7.
Revert "ARM: 7493/1: use generic unaligned.h"

This reverts commit ddba8435f30d417fbc08ba33f17cc9656404a78b.
Revert "ARM: 7491/1: use generic version of identical asm headers"

This reverts commit f9aafaa3b2d95718b580c812fc2a51237b798aba.
Revert "ARM: 7006/1: Migrate to asm-generic wrapper support"

This reverts commit 775e30ba54b5ef66e7c301ef196e29aed1510a9c.