adb: use correct header file.

Change-Id: I7a66ced762dc077247fd7c2714ae8850ffdcaeb9
diff --git a/adb/adb.c b/adb/adb.c
index 399d43a..71b7a8b 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -35,7 +35,7 @@
 
 #if !ADB_HOST
 #include <private/android_filesystem_config.h>
-#include <linux/capability.h>
+#include <sys/capability.h>
 #include <linux/prctl.h>
 #include <sys/mount.h>
 #else