Update binderfs code to align with ubuntu kernel 5.0.0

To keep compatible with kernel lower to 4.14, some changes are needed.

For ubuntu kernel, security hook secid_to_secctx is missing which will cause
binder transaction failed. Disable it for now.

Change-Id: I0e702b0c3d3d46d91416667cdd1ddba3db7028f0
Tracked-On:
Reviewed-on: https://android.intel.com/681932
Reviewed-by: Wang, Liang <liang.wang@intel.com>
Reviewed-by: Yang, Bin Y <bin.y.yang@intel.com>
Tested-by: Zheng, Joe <joe.zheng@intel.com>

Author: Fengqian Gao

binder/Makefile

@@ -1,17 +1,15 @@
-ccflags-y += -I$(src) -Wno-int-conversion -Wno-error=incompatible-pointer-types  -DCONFIG_ANDROID_BINDER_DEVICES="\"hostbinder,hostvndbinder,hosthwbinder\"" -DCONFIG_ANDROID_BINDERFS
-obj-m := binderfs_module.o binder_module.o
-binder_module-y := deps.o binder.o binder_alloc.o
-binderfs_module-y := deps.o binderfs.o
+ccflags-y += -I$(src) -Wno-int-conversion -Wno-error=incompatible-pointer-types  -DCONFIG_ANDROID_BINDER_DEVICES="\"\"" -DCONFIG_ANDROID_BINDERFS
+
+obj-m := binder_linux.o
+binder_linux-y := binder.o binder_alloc.o deps.o binderfs.o
 
 KERNEL_SRC ?= /lib/modules/$(shell uname -r)/build
 
 all:
 	$(MAKE) -C $(KERNEL_SRC) V=0 M=$$PWD
 
 install:
-	cp binder_module.ko $(DESTDIR)/
-	cp binderfs_module.ko $(DESTDIR)/
-	insmod binder_module.ko
-	insmod binderfs_module.ko
+	cp binder_linux.ko $(DESTDIR)/
+	insmod binder_linux.ko
 clean:
 	rm -rf *.o *.ko *.mod.c *.symvers *.order .*.cmd .tmp_versions *.ur-safe