Move qemud and /dev/qemu policy bits to emulator-specific sepolicy.

Change-Id: I620d4aef84a5d4565abb1695db54ce1653612bce
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/target/board/generic/sepolicy/file_contexts b/target/board/generic/sepolicy/file_contexts
new file mode 100644
index 0000000..f204cde
--- /dev/null
+++ b/target/board/generic/sepolicy/file_contexts
@@ -0,0 +1,4 @@
+/dev/qemu_.*		u:object_r:qemu_device:s0
+/dev/socket/qemud	u:object_r:qemud_socket:s0
+/system/bin/qemud	u:object_r:qemud_exec:s0
+/sys/qemu_trace(/.*)?	--	u:object_r:sysfs_writable:s0