Include vcvtnq_s32_f32 polyfill in NEON requantization stubs

PiperOrigin-RevId: 384398547
diff --git a/src/qs8-requantization/fp32-neon.c b/src/qs8-requantization/fp32-neon.c
index 448cf25..b48ef69 100644
--- a/src/qs8-requantization/fp32-neon.c
+++ b/src/qs8-requantization/fp32-neon.c
@@ -12,6 +12,7 @@
 
 #include <arm_neon.h>
 
+#include <xnnpack/intrinsics-polyfill.h>
 #include <xnnpack/requantization-stubs.h>
 
 
diff --git a/src/qu8-requantization/fp32-neon.c b/src/qu8-requantization/fp32-neon.c
index 2f5a792..a3f88b5 100644
--- a/src/qu8-requantization/fp32-neon.c
+++ b/src/qu8-requantization/fp32-neon.c
@@ -12,6 +12,7 @@
 
 #include <arm_neon.h>
 
+#include <xnnpack/intrinsics-polyfill.h>
 #include <xnnpack/requantization-stubs.h>