msm8x60_celox: Clean up deprecated memory functions

*PMEM is deprecated^9001 (OVER 9,000)
*FB_MSM_MIPI_S6E8AA0_HD720_PANEL is not enabled for any celox device
*FB_MSM_TVOUT is not enabled for any celox device
*FB_MSM_HDMI_AS_PRIMARY is not enabled for any celox device
*SEC_KERNEL_REBASE_FOR_PMEM_OPTIMIZATION is not enabled for any celox device
*"workaournd for kernel memory crash by TZBSP XPU" is not present in the stock Samsung kernel
*MSM8660 does not support writeback

Change-Id: I53498e1f06332d38b338a9a6486f6739a616a735
Signed-off-by: Sultanxda <sultanxda@gmail.com>
msm8x60_celox: Optimize Ion heap sizes and layout

*Removed writeback heap (MSM8660 doesn't use writeback)
*Removed qsecom heap
*Shrunk SF heap to a suitable size
*Shrunk camera heap to a suitable size
*SMI region (64MB) is now being fully utilized (previously there were 8MB of unused RAM in the SMI region)
*Userspace now has a ~65MB increase in real RAM (847MB total), as seen in About phone

Change-Id: I26cead93b762f68b2123f9f13f483a338907f8d0
Signed-off-by: Sultanxda <sultanxda@gmail.com>