fix shgemm parameter references in arm64 branch

kernel/setparam-ref.c

@@ -707,19 +707,25 @@ gotoblas_t TABLE_NAME = {
 
 #if defined(ARCH_ARM64)
 static void init_parameter(void) {
+#if defined(BUILD_HALFi)
   TABLE_NAME.shgemm_p = SHGEMM_DEFAULT_P;
+#endif
   TABLE_NAME.sgemm_p = SGEMM_DEFAULT_P;
   TABLE_NAME.dgemm_p = DGEMM_DEFAULT_P;
   TABLE_NAME.cgemm_p = CGEMM_DEFAULT_P;
   TABLE_NAME.zgemm_p = ZGEMM_DEFAULT_P;
 
+#if defined(BUILD_HALF)
   TABLE_NAME.shgemm_q = SHGEMM_DEFAULT_Q;
+#endif
   TABLE_NAME.sgemm_q = SGEMM_DEFAULT_Q;
   TABLE_NAME.dgemm_q = DGEMM_DEFAULT_Q;
   TABLE_NAME.cgemm_q = CGEMM_DEFAULT_Q;
   TABLE_NAME.zgemm_q = ZGEMM_DEFAULT_Q;
 
+#if defined(BUILD_HALF)
   TABLE_NAME.shgemm_r = SHGEMM_DEFAULT_R;
+#endif
   TABLE_NAME.sgemm_r = SGEMM_DEFAULT_R;
   TABLE_NAME.dgemm_r = DGEMM_DEFAULT_R;
   TABLE_NAME.cgemm_r = CGEMM_DEFAULT_R;