NEON-FP16 implementation of F16->F32 VCVT microkernels

PiperOrigin-RevId: 399533359
diff --git a/src/xnnpack/isa-checks.h b/src/xnnpack/isa-checks.h
index a0d1aeb..a08d46e 100644
--- a/src/xnnpack/isa-checks.h
+++ b/src/xnnpack/isa-checks.h
@@ -97,6 +97,13 @@
     } \
   } while (0)
 
+#define TEST_REQUIRES_ARM_NEON_FP16 \
+  do { \
+    if (!cpuinfo_initialize() || !cpuinfo_has_arm_neon_fp16()) { \
+      GTEST_SKIP(); \
+    } \
+  } while (0)
+
 #define TEST_REQUIRES_ARM_NEON_FMA \
   do { \
     if (!cpuinfo_initialize() || !cpuinfo_has_arm_neon_fma()) { \