vppinfra: fix function prototypes

Type: fix

Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: Idbdfdf2d3fdbb64366f50d5a7458c4073a4f2746
diff --git a/src/vppinfra/cpu.h b/src/vppinfra/cpu.h
index 31049f5..769bdb5 100644
--- a/src/vppinfra/cpu.h
+++ b/src/vppinfra/cpu.h
@@ -166,10 +166,10 @@
 _ (sha512,     21) \
 _ (sve,        22)
 
-u32 clib_get_current_cpu_id ();
-u32 clib_get_current_numa_node ();
+u32 clib_get_current_cpu_id (void);
+u32 clib_get_current_numa_node (void);
 
-typedef int (*clib_cpu_supports_func_t) ();
+typedef int (*clib_cpu_supports_func_t) (void);
 
 #if defined(__x86_64__)
 #include "cpuid.h"