sm6150-common: Configure zram from separate fstab

Change-Id: I3d093f06b08ad1cc049325d0136b60cab70c29d0

rootdir/etc/fstab.zram

@@ -0,0 +1,4 @@
+# Android fstab file.
+
+#<src>                                                  <mnt_point>            <type>  <mnt_flags and options>                              <fs_mgr_flags>
+/dev/block/zram0                                        none                   swap    defaults                                             zramsize=1073741824

rootdir/etc/init.target.rc

@@ -54,7 +54,7 @@ on init
     write /sys/block/sde/queue/nr_requests 256
 
 on fs
-    mount_all --early
+    mount_all --early /vendor/etc/fstab.qcom
 
     restorecon_recursive /mnt/vendor/persist
     mkdir /mnt/vendor/persist/data 0700 system system
@@ -64,7 +64,7 @@ on fs
 on late-fs
     wait_for_prop hwservicemanager.ready true
     exec_start wait_for_keymaster
-    mount_all --late
+    mount_all --late /vendor/etc/fstab.qcom
 
 on post-fs-data
     mkdir /data/vendor/nnhal 0700 system system
@@ -97,7 +97,7 @@ on property:sys.boot_completed=1
     write /proc/sys/vm/swappiness 100
 
     # Enable ZRAM on boot_complete
-    swapon_all /vendor/etc/fstab.qcom
+    swapon_all /vendor/etc/fstab.zram
 
     # Runtime fs tuning
     write /sys/block/sda/queue/read_ahead_kb 128

sm6150.mk

@@ -143,6 +143,10 @@ PRODUCT_PACKAGES += \
     FM2 \
     qcom.fmradio
 
+# Fstab
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/rootdir/etc/fstab.zram:$(TARGET_COPY_OUT_VENDOR)/etc/fstab.zram
+
 # GPS
 PRODUCT_PACKAGES += \
     android.hardware.gnss@2.1-impl-qti \