Goodix FP HAL: Be quiet!

The FP HAL spams like hell when using the fingerprint reader.
Touching the reader with the correct finger causes 272(!) logcat lines. This slows the wake up significantly...
Since there is no switch built into the HAL to disable this output, just shim the whole log function to return nothing.

A good indicator of how much the spamming slows down the wake up are the physical buttons. They light up quite fast but the screen is activated only after all the logging is done.
With this shim in place the screen and buttons light up nearly simultaneously.

Change-Id: Ic51e8c2ddd7588fdb14a4ecf62b26dd8504c5e16

BoardConfig.mk

@@ -204,7 +204,9 @@ BOARD_PLAT_PRIVATE_SEPOLICY_DIR += $(DEVICE_PATH)/sepolicy/private
 BOARD_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy/vendor
 
 # Shims
-TARGET_LD_SHIM_LIBS := /vendor/bin/mm-qcamera-daemon|libshims_qcamera-daemon.so
+TARGET_LD_SHIM_LIBS += \
+/vendor/bin/mm-qcamera-daemon|libshims_qcamera-daemon.so \
+/vendor/lib64/hw/gxfingerprint.default.so|fakelogprint.so:/vendor/lib64/hw/fingerprint.goodix.so|fakelogprint.so:/vendor/bin/gx_fpd|fakelogprint.so
 
 # Treble
 BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true

device.mk

@@ -177,7 +177,8 @@ PRODUCT_PACKAGES += \
 
 # Fingerprint
 PRODUCT_PACKAGES += \
-    [email protected]_markw
+    [email protected]_markw \
+    fakelogprint
 
 # FM
 PRODUCT_PACKAGES += \

libshims/Android.mk

@@ -33,3 +33,17 @@ LOCAL_SANITIZE := never
 LOCAL_MODULE_CLASS := SHARED_LIBRARIES
 
 include $(BUILD_SHARED_LIBRARY)
+
+# fake print lib for hexedited fingerprint libs
+include $(CLEAR_VARS)
+LOCAL_SHARED_LIBRARIES := \
+    liblog
+LOCAL_SRC_FILES := fakelogprint/fakelogprint.cpp
+
+LOCAL_MODULE := fakelogprint
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_VENDOR_MODULE := true
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+
+include $(BUILD_SHARED_LIBRARY)

libshims/fakelogprint/fakelogprint.cpp

@@ -0,0 +1,8 @@
+#include <log/log_transport.h>
+#include <private/android_filesystem_config.h>
+#include <private/android_logger.h>
+
+int __android_log_print(int prio, const char* tag, const char* fmt, ...) {
+  // Goodix: please don't spam that much!
+  return 0;
+}