config: BoardConfigReservedSize: Prevent overlayfs on remount

* When we remount partitions via `adb remount`, a scratch partition
  is made for overlayfs to use - this takes up space and breaks OTA.
  The end user /could/ run this to fix it:
  `adb reboot fastboot && fastboot delete-logical-partition scratch && fastboot reboot`
  But that's bad UX, remount should work. This ensures that with or without GMS,
  we reserve some space on all dynamic partitions.
* Set amount to `8 * 1024 * 1024` + 1 for good measure.
* Don't reserve this amount of `-user` builds as we don't remount
  there.

Change-Id: I969aea92747a17ceca299e109c6e0ab563951374
diff --git a/config/BoardConfigReservedSize.mk b/config/BoardConfigReservedSize.mk
index 5057531..0a5f9e4 100644
--- a/config/BoardConfigReservedSize.mk
+++ b/config/BoardConfigReservedSize.mk
@@ -9,11 +9,21 @@
 BOARD_PRODUCTIMAGE_EXTFS_INODE_COUNT ?= -1
 ifeq ($(BOARD_PRODUCTIMAGE_MINIMAL_PARTITION_RESERVED_SIZE),true)
 BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE ?= 1188036608
-else
+else # BOARD_PRODUCTIMAGE_MINIMAL_PARTITION_RESERVED_SIZE
 BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE ?= 1957691392
 endif
 BOARD_SYSTEMIMAGE_EXTFS_INODE_COUNT ?= -1
 BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE ?= 94371840
 BOARD_SYSTEM_EXTIMAGE_EXTFS_INODE_COUNT ?= -1
 BOARD_SYSTEM_EXTIMAGE_PARTITION_RESERVED_SIZE ?= 94371840
+else # WITH_GMS
+ifneq ($(TARGET_BUILD_VARIANT),user)
+BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE ?= 8388609
+BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE ?= 8388609
+BOARD_SYSTEM_EXTIMAGE_PARTITION_RESERVED_SIZE ?= 8388609
+endif
+endif
+
+ifneq ($(TARGET_BUILD_VARIANT),user)
+BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE ?= 8388609
 endif