Split qs8-gemm-minmax-rndnu.yaml into 2 files, all the microkernels with c2 suffix goes into a separate file.

PiperOrigin-RevId: 420328942
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1132aeb..389acae 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7563,7 +7563,7 @@
   TARGET_LINK_LIBRARIES(qs8-gemm-minmax-fp32-test PRIVATE cpuinfo fp16 pthreadpool gtest gtest_main)
   ADD_TEST(qs8-gemm-minmax-fp32-test qs8-gemm-minmax-fp32-test)
 
-  ADD_EXECUTABLE(qs8-gemm-minmax-rndnu-test test/qs8-gemm-minmax-rndnu.cc $<TARGET_OBJECTS:all_microkernels> $<TARGET_OBJECTS:packing>)
+  ADD_EXECUTABLE(qs8-gemm-minmax-rndnu-test test/qs8-gemm-minmax-rndnu.cc test/qs8-gemm-minmax-rndnu-c2.cc $<TARGET_OBJECTS:all_microkernels> $<TARGET_OBJECTS:packing>)
   SET_TARGET_PROPERTIES(qs8-gemm-minmax-rndnu-test PROPERTIES
     CXX_STANDARD 11
     CXX_STANDARD_REQUIRED YES