Clone pyramid_defconfig to Sultan_defconfig
pyramid: Optimize memory map for more RAM

*Removed writeback code (MSM8660 doesn't support writeback)
*Removed ION camera heap (the ION camera heap is a legacy heap only used on MSM8660. The camera HAL I'm using from Flemmard is from an MSM8960 device, so it doesn't use the ION camera heap. Instead, it uses MM and IOMMU, but because we have no IOMMU, the HAL falls back to MM and uses MM for both camera preview and SMI)
*Userspace now has 603MB of RAM (a 48MB increase)

Signed-off-by: Sultanxda <sultanxda@gmail.com>