sel4platsupport,RISCV: Re-add header include
diff --git a/libsel4platsupport/src/arch/riscv/timer.c b/libsel4platsupport/src/arch/riscv/timer.c
index cf4448c..3446b50 100644
--- a/libsel4platsupport/src/arch/riscv/timer.c
+++ b/libsel4platsupport/src/arch/riscv/timer.c
@@ -12,6 +12,8 @@
 #include <vka/vka.h>
 #include <vspace/vspace.h>
 
+#include <sel4platsupport/timer.h>
+
 #include <stdlib.h>
 
 seL4_timer_t *