Minor refactoring in QC8 microkernels

Rename CONV_PARAMS to PARAMS_UNION

PiperOrigin-RevId: 382605717
diff --git a/src/qs8-igemm/neon-mlal-lane.c.in b/src/qs8-igemm/neon-mlal-lane.c.in
index ac634ec..ed2963a 100644
--- a/src/qs8-igemm/neon-mlal-lane.c.in
+++ b/src/qs8-igemm/neon-mlal-lane.c.in
@@ -19,7 +19,7 @@
 
 
 $DATATYPE = "qc8" if CHANNELWISE else "qs8"
-$CONV_PARAMS = "xnn_qs8_minmax_params" if CHANNELWISE else "xnn_qs8_conv_minmax_params"
+$PARAMS_UNION = "xnn_qs8_minmax_params" if CHANNELWISE else "xnn_qs8_conv_minmax_params"
 $PARAMS_STRUCT = ("" if CHANNELWISE else REQUANTIZATION.lower() + "_") + ("neonv8" if ARMV8 and not CHANNELWISE else "neon")
 $if REQUANTIZATION == "FP32" and CHANNELWISE and not ARMV8:
   $PARAMS_STRUCT = "neon_fp32"
@@ -36,7 +36,7 @@
     size_t cn_stride,
     size_t a_offset,
     const int8_t* zero,
-    const union ${CONV_PARAMS} params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
+    const union ${PARAMS_UNION} params[restrict XNN_MIN_ELEMENTS(1)]) XNN_DISABLE_TSAN
 {
   assert(mr != 0);
   assert(mr <= ${MR});