android-common: Fix slab.h includes for 2.6.34-rc4

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/android/binder.c

@@ -31,6 +31,7 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 #include <linux/vmalloc.h>
+#include <linux/slab.h>
 
 #include "binder.h"
 

drivers/staging/android/logger.c

@@ -23,6 +23,7 @@
 #include <linux/miscdevice.h>
 #include <linux/uaccess.h>
 #include <linux/poll.h>
+#include <linux/slab.h>
 #include <linux/time.h>
 #include "logger.h"