Build brctl for Android

Test: build and run btcrl on device
Change-Id: Ib8116a39a7c54bd3aa53b1ad5e81651aee07a03a

.config-device

@@ -49,7 +49,7 @@ CONFIG_BLKDISCARD=y
 CONFIG_BLKID=y
 CONFIG_BLOCKDEV=y
 # CONFIG_BOOTCHARTD is not set
-# CONFIG_BRCTL is not set
+CONFIG_BRCTL=y
 # CONFIG_BUNZIP2 is not set
 # CONFIG_BZCAT is not set
 CONFIG_CAL=y

Android.bp

@@ -209,6 +209,7 @@ device_srcs = [
     "toys/other/vconfig.c",
     "toys/other/vmstat.c",
     "toys/other/watch.c",
+    "toys/pending/brctl.c",
     "toys/pending/getfattr.c",
     "toys/pending/lsof.c",
     "toys/pending/modprobe.c",
@@ -245,6 +246,7 @@ toybox_symlinks = [
     "base64",
     "basename",
     "blockdev",
+    "brctl",
     "cal",
     "cat",
     "chattr",

android/device/generated/config.h

@@ -72,8 +72,8 @@
 #define USE_BLOCKDEV(...) __VA_ARGS__
 #define CFG_BOOTCHARTD 0
 #define USE_BOOTCHARTD(...)
-#define CFG_BRCTL 0
-#define USE_BRCTL(...)
+#define CFG_BRCTL 1
+#define USE_BRCTL(...) __VA_ARGS__
 #define CFG_BUNZIP2 0
 #define USE_BUNZIP2(...)
 #define CFG_BZCAT 0