Always package ext filesystem tools

Every target we have needs these now.

Test: treehugger; codesearch
Change-Id: I6ab7e48887b19f956b2a7aeac78169f0e2035c73
diff --git a/core/Makefile b/core/Makefile
index 7d1c7ff..b6c9f3e 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1224,15 +1224,12 @@
 
 INTERNAL_USERIMAGES_EXT_VARIANT :=
 ifeq ($(TARGET_USERIMAGES_USE_EXT2),true)
-INTERNAL_USERIMAGES_USE_EXT := true
 INTERNAL_USERIMAGES_EXT_VARIANT := ext2
 else
 ifeq ($(TARGET_USERIMAGES_USE_EXT3),true)
-INTERNAL_USERIMAGES_USE_EXT := true
 INTERNAL_USERIMAGES_EXT_VARIANT := ext3
 else
 ifeq ($(TARGET_USERIMAGES_USE_EXT4),true)
-INTERNAL_USERIMAGES_USE_EXT := true
 INTERNAL_USERIMAGES_EXT_VARIANT := ext4
 endif
 endif
@@ -1249,13 +1246,11 @@
   INTERNAL_USERIMAGES_SPARSE_EXT_FLAG := -s
 endif
 
-ifeq ($(INTERNAL_USERIMAGES_USE_EXT),true)
 INTERNAL_USERIMAGES_DEPS := $(SIMG2IMG)
 INTERNAL_USERIMAGES_DEPS += $(MKEXTUSERIMG) $(MAKE_EXT4FS) $(E2FSCK) $(TUNE2FS)
 ifeq ($(TARGET_USERIMAGES_USE_F2FS),true)
 INTERNAL_USERIMAGES_DEPS += $(MKF2FSUSERIMG) $(MAKE_F2FS)
 endif
-endif
 
 ifeq ($(BOARD_AVB_ENABLE),true)
 INTERNAL_USERIMAGES_DEPS += $(AVBTOOL)
@@ -1282,9 +1277,7 @@
 
 INTERNAL_USERIMAGES_DEPS += $(BLK_ALLOC_TO_BASE_FS)
 
-ifeq ($(INTERNAL_USERIMAGES_USE_EXT),true)
 INTERNAL_USERIMAGES_DEPS += $(MKE2FS_CONF)
-endif
 
 ifeq (true,$(PRODUCT_USE_DYNAMIC_PARTITIONS))