include/linux/compat.h: Add <time.h>

As this file has macros which use get_timer() it must include <time.h>
to resolve this.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/linux/compat.h b/include/linux/compat.h
index f8e3570..6238145 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -5,6 +5,7 @@
 #include <cyclic.h>
 #include <log.h>
 #include <malloc.h>
+#include <time.h>
 
 #include <asm/processor.h>