tomoyo: Use bin2c to generate builtin-policy.h

Simplify the Makefile by using a readily available tool instead of a
custom sed script. The downside is that builtin-policy.h becomes
unreadable for humans, but it is only a generated file.

Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/security/tomoyo/Kconfig b/security/tomoyo/Kconfig
index 604e718..404dce6 100644
--- a/security/tomoyo/Kconfig
+++ b/security/tomoyo/Kconfig
@@ -6,6 +6,7 @@
 	select SECURITY_PATH
 	select SECURITY_NETWORK
 	select SRCU
+	select BUILD_BIN2C
 	default n
 	help
 	  This selects TOMOYO Linux, pathname-based access control.