flounder: increase system partition size, decrease cache and userdata

Update partition sizes in BoardConfig.mk to match bootloader
version 3.18.0.2100.

Change-Id: I02325222cfa95597cb79f725fae4e3b0ce35ff22
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 0da397f..15a82ab 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -49,9 +49,9 @@
 
 TARGET_RECOVERY_FSTAB = device/htc/flounder/fstab.flounder
 TARGET_USERIMAGES_USE_EXT4 := true
-BOARD_SYSTEMIMAGE_PARTITION_SIZE := 805306368
-BOARD_USERDATAIMAGE_PARTITION_SIZE := 14061928448
-BOARD_CACHEIMAGE_PARTITION_SIZE := 805306368
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1342177280
+BOARD_USERDATAIMAGE_PARTITION_SIZE := 13373014016
+BOARD_CACHEIMAGE_PARTITION_SIZE := 268435456
 BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
 BOARD_FLASH_BLOCK_SIZE := 4096