build: add scalar (no-simd) march variant

for testing purposes, disabled by default

Type: improvement
Signed-off-by: Damjan Marion <damarion@cisco.com>
Change-Id: Id616e2b3b21ae0f0b44e2b55ecefd501afacc7f2
diff --git a/src/vppinfra/test/memcpy_x86_64.c b/src/vppinfra/test/memcpy_x86_64.c
index 4d9525d..9b93bb1 100644
--- a/src/vppinfra/test/memcpy_x86_64.c
+++ b/src/vppinfra/test/memcpy_x86_64.c
@@ -6,7 +6,7 @@
 
 #include <vppinfra/format.h>
 #include <vppinfra/test/test.h>
-#include <vppinfra/vector/mask_compare.h>
+#include <vppinfra/memcpy_x86_64.h>
 
 __test_funct_fn void
 wrapper (u8 *dst, u8 *src, uword n)