COMPMID-2378: Sanitize GEMM configuration for NEON

Change-Id: I7859b82b2059e14685f8792424648ac5eacd67f1
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1418
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/NEON/kernels/arm_gemm/transforms/a32_interleave_6way_32bit.hpp b/src/core/NEON/kernels/arm_gemm/transforms/a32_interleave_6way_32bit.hpp
index 20ad301..a460fdf 100644
--- a/src/core/NEON/kernels/arm_gemm/transforms/a32_interleave_6way_32bit.hpp
+++ b/src/core/NEON/kernels/arm_gemm/transforms/a32_interleave_6way_32bit.hpp
@@ -60,12 +60,16 @@
                     /* Everything falls through in here */
                     case 4:
                         inptr1 = zerobuff;
+                        // fall through
                     case 3:
                         inptr2 = zerobuff;
+                        // fall through
                     case 2:
                         inptr3 = zerobuff;
+                        // fall through
                     case 1:
                         inptr4 = zerobuff;
+                        // fall through
                     case 0:
                         inptr5 = zerobuff;
                         break;