tests: Pick up testdata with LOCAL_TEST_DATA.

Also push the testdata in AndroidTest.xml for `atest`.

LOCAL_TEST_DATA was added in commit [1], which ships testdata next to
native tests.

With this CL,
 1) manually sync-ing via `adb sync` and running tests with `adb shell`
    keep working.
 2) both of 32- and 64-bit recovery_{unit,component}_test now work in
    APCT continuous tests. Note that 64-bit tests were failing
    previously in APCT, due to missing testdata.
 3) `atest recovery_unit_test` works, as the testdata gets pushed to
    /data/local/tmp.

[1] commit d07ba4e2a625a8f000d042c1953adb612bccbbe2 in
https://android-review.googlesource.com/c/platform/build/+/312567.

Bug: 77320514
Test: Build recovery_{unit,component,manual}_test. Setup the test via
      `adb sync data`. Run both of 32- and 64-bit versions on device.
Test: Build and run recovery_host_test on host, for both of 32- and
      64-bit versions.
Test: `atest recovery_component_test`
Change-Id: Ie54037726043a3a659a80030b83db1f8c1de318d
diff --git a/tests/Android.mk b/tests/Android.mk
index 9a71371..58cefd2 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -45,6 +45,8 @@
 
 LOCAL_C_INCLUDES := bootable/recovery
 LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_TEST_DATA := \
+    $(call find-test-data-in-subdirs, $(LOCAL_PATH), "*", testdata)
 include $(BUILD_NATIVE_TEST)
 
 # Manual tests
@@ -61,25 +63,8 @@
     liblog \
     libpng
 
-resource_files := $(call find-files-in-subdirs, bootable/recovery, \
-    "*_text.png", \
-    res-mdpi/images \
-    res-hdpi/images \
-    res-xhdpi/images \
-    res-xxhdpi/images \
-    res-xxxhdpi/images \
-    )
-
-# The resource image files that will go to $OUT/data/nativetest/recovery.
-testimage_out_path := $(TARGET_OUT_DATA)/nativetest/recovery
-GEN := $(addprefix $(testimage_out_path)/, $(resource_files))
-
-$(GEN): PRIVATE_PATH := $(LOCAL_PATH)
-$(GEN): PRIVATE_CUSTOM_TOOL = cp $< $@
-$(GEN): $(testimage_out_path)/% : bootable/recovery/%
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
+LOCAL_TEST_DATA := \
+    $(call find-test-data-in-subdirs, bootable/recovery, "*_text.png", res-*)
 include $(BUILD_NATIVE_TEST)
 
 # Component tests
@@ -171,29 +156,8 @@
     libBionicGtestMain \
     $(tune2fs_static_libraries)
 
-testdata_files := $(call find-subdir-files, testdata/*)
-
-# The testdata files that will go to $OUT/data/nativetest/recovery.
-testdata_out_path := $(TARGET_OUT_DATA)/nativetest/recovery
-GEN := $(addprefix $(testdata_out_path)/, $(testdata_files))
-$(GEN): PRIVATE_PATH := $(LOCAL_PATH)
-$(GEN): PRIVATE_CUSTOM_TOOL = cp $< $@
-$(GEN): $(testdata_out_path)/% : $(LOCAL_PATH)/%
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-
-# A copy of the testdata to be packed into continuous_native_tests.zip.
-testdata_continuous_zip_prefix := \
-    $(call intermediates-dir-for,PACKAGING,recovery_component_test)/DATA
-testdata_continuous_zip_path := $(testdata_continuous_zip_prefix)/nativetest/recovery
-GEN := $(addprefix $(testdata_continuous_zip_path)/, $(testdata_files))
-$(GEN): PRIVATE_PATH := $(LOCAL_PATH)
-$(GEN): PRIVATE_CUSTOM_TOOL = cp $< $@
-$(GEN): $(testdata_continuous_zip_path)/% : $(LOCAL_PATH)/%
-	$(transform-generated-source)
-LOCAL_GENERATED_SOURCES += $(GEN)
-LOCAL_PICKUP_FILES := $(testdata_continuous_zip_prefix)
-
+LOCAL_TEST_DATA := \
+    $(call find-test-data-in-subdirs, $(LOCAL_PATH), "*", testdata)
 include $(BUILD_NATIVE_TEST)
 
 # Host tests
@@ -222,4 +186,6 @@
     libBionicGtestMain
 LOCAL_SHARED_LIBRARIES := \
     liblog
+LOCAL_TEST_DATA := \
+    $(call find-test-data-in-subdirs, $(LOCAL_PATH), "*", testdata)
 include $(BUILD_HOST_NATIVE_TEST)