netbpfload: Relax kernel version requirement

Change-Id: Ic875fd15b407c0cb387fc51ee5a9dc6e132db2d1
Signed-off-by: Nanhumly <admin@warbler.cc>

netbpfload/NetBpfLoad.cpp

@@ -177,8 +177,7 @@ int main(int argc, char** argv, char * const envp[]) {
     const bool isAtLeastU = (device_api_level >= __ANDROID_API_U__);
 
     if (!android::bpf::isAtLeastKernelVersion(4, 19, 0)) {
-        ALOGE("Android U QPR2 requires kernel 4.19.");
-        return 1;
+        ALOGW("Android U QPR2 requires kernel 4.19.");
     }
 
     if (android::bpf::isUserspace32bit() && android::bpf::isAtLeastKernelVersion(6, 2, 0)) {