config: android: enable CONFIG_SECCOMP

As of Android N, SECCOMP is required. Without it, we will get
mediaextractor error:

E /system/bin/mediaextractor: libminijail: prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER): Invalid argument

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Rob Herring <[email protected]>
Acked-by: John Stultz <[email protected]>
Cc: Amit Pundir <[email protected]>
Cc: Dmitry Shmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

kernel/configs/android-base.config

@@ -131,6 +131,7 @@ CONFIG_PREEMPT=y
 CONFIG_QUOTA=y
 CONFIG_RTC_CLASS=y
 CONFIG_RT_GROUP_SCHED=y
+CONFIG_SECCOMP=y
 CONFIG_SECURITY=y
 CONFIG_SECURITY_NETWORK=y
 CONFIG_SECURITY_SELINUX=y