msm8226: Switch to new schema of enabling zRAM feature

zRAM swapping is needed to increase available free memory on 8x26.

Google provided new schema to enable zRAM, so replacing old schema.
This reverts commit e1b4b1b01baef15789188faf618d1b5ecd355642.
and adds the new way of enabling zRAM swap.
zRAM size is increased to 512MB for 1GB targets

Change-Id: I674e4ca2cb782fa2328f668988bc715be57e5f7f
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
diff --git a/fstab.qcom b/fstab.qcom
index 6a0c5bd..124ea9f 100644
--- a/fstab.qcom
+++ b/fstab.qcom
@@ -9,5 +9,6 @@
 /dev/block/platform/msm_sdcc.1/by-name/system         /system      ext4    ro,barrier=1                                wait
 /dev/block/platform/msm_sdcc.1/by-name/userdata       /data        ext4    nosuid,nodev,barrier=1,noauto_da_alloc      wait,check,encryptable=footer
 /devices/msm_sdcc.2/mmc_host                 /storage/sdcard1         vfat    nosuid,nodev                    wait,voldmanaged=sdcard1:auto
+/dev/block/zram0 none swap defaults zramsize=536870912
 #/dev/block/mmcblk0p11         /system      ext4    ro,barrier=1                                wait
 #/dev/block/mmcblk0p12       /data        ext4    nosuid,nodev,barrier=1,noauto_da_alloc      wait,check,encryptable=footer