Revert "Revert ION"

This reverts commit 72c70b21ef03fa11abc7f9ddcb4c4d3be3095998.

Conflicts:
	arch/arm/configs/sultan-linaro-NO-bcm4329_defconfig
	arch/arm/mach-msm/board-pyramid.h
	build-sultan-kernel
Defconfig: add ION support
Remap ION so we have 583MB RAM instead of 433MB RAM