fastboot: call mke2fs tools to generate ext4 image

Set MKE2FS_CONFIG to empty to use mke2fs default configs

Test: fastboot --wipe-and-use-fbe
Bug: 35219933
Change-Id: Ibc97bb125899e1f1fe820d53709fdb2ab291c171
(cherry picked from commit d14d7c14cbe297614bf99dae9bf50b1fc342c44e)
diff --git a/fastboot/Android.mk b/fastboot/Android.mk
index 80def73..0b656aa 100644
--- a/fastboot/Android.mk
+++ b/fastboot/Android.mk
@@ -40,6 +40,7 @@
 LOCAL_MODULE_TAGS := debug
 LOCAL_MODULE_HOST_OS := darwin linux windows
 LOCAL_CFLAGS += -Wall -Wextra -Werror -Wunreachable-code
+LOCAL_REQUIRED_MODULES := mke2fs e2fsdroid
 
 LOCAL_SRC_FILES_linux := usb_linux.cpp
 LOCAL_STATIC_LIBRARIES_linux := libselinux