init: create android::init:: namespace

With some small fixups along the way

Test: Boot bullhead
Test: init unit tests
Change-Id: I7beaa473cfa9397f845f810557d1631b4a462d6a
diff --git a/init/log.cpp b/init/log.cpp
index 0615730..1830077 100644
--- a/init/log.cpp
+++ b/init/log.cpp
@@ -23,6 +23,9 @@
 #include <android-base/logging.h>
 #include <selinux/selinux.h>
 
+namespace android {
+namespace init {
+
 void InitKernelLogging(char* argv[]) {
     // Make stdin/stdout/stderr all point to /dev/null.
     int fd = open("/sys/fs/selinux/null", O_RDWR);
@@ -55,3 +58,6 @@
     android::base::KernelLogger(android::base::MAIN, severity, "selinux", nullptr, 0, buf);
     return 0;
 }
+
+}  // namespace init
+}  // namespace android