fp32 IGEMM 4x8 and 6x8 ld64 microkernels

PiperOrigin-RevId: 378945611
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f469971..51a8330 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3343,6 +3343,8 @@
   src/f32-igemm/gen/5x8-minmax-aarch64-neonfma-cortex-a75.S
   src/f32-igemm/gen/6x8-minmax-aarch64-neonfma-cortex-a57.S
   src/f32-igemm/gen/6x8-minmax-aarch64-neonfma-cortex-a75.S
+  src/f32-igemm/gen/4x8-minmax-aarch64-neonfma-ld64.S
+  src/f32-igemm/gen/6x8-minmax-aarch64-neonfma-ld64.S
   src/qs8-gemm/gen/1x8c8-minmax-gemmlowp-aarch64-neon-mlal-padal-cortex-a53.S
   src/qs8-gemm/gen/1x8c8-minmax-gemmlowp-aarch64-neon-mlal-padal-prfm-cortex-a53.S
   src/qs8-gemm/gen/1x8c8-minmax-gemmlowp-aarch64-neon-mlal-padal-prfm.S