Get rid of ANDROID_PMEM define
* newer devices arent using pmem anymore so they dont have ANDROID_PMEM define in their defconfigs
but we have that define in our defconfigs for hybrid memory allocation

to avoid deprecated pmem codes which ifdefed with CONFIG_ANDROID_PMEM (like this https://github.com/arco/samsung-kernel-msm7x30/blob/cm-11.0/drivers/gpu/msm/kgsl.c#L1868)
just rename it from CONFIG_ANDROID_PMEM to CONFIG_ANDROID_PMEM_SUPPORT

this will block out all of pmem codes which ifdefed with CONFIG_ANDROID_PMEM
defconfigs: Build wifi driver as built-in
* after updating bcmdhd driver we can use it as built-in instead of module
* there won't be module so there won't be module loading while opening wifi so
this will get us faster wifi switching(opening/closing)
defconfigs: Enabled overlay0 & ion wb support for testing
* let's see how it goes :)
* ı think even if we dont have HDMİ or external video support We should use that it other msm7x30 devices(SPH-M840)
msm7x30: Added overlay0 & ion writeback support
* reference:CAF and SPH-M840 board file
* can be enabled by CONFIG_FB_MSM_OVERLAY0_WRITEBACK=y