Merge pull request #5800 from notaz/armv7_sgemm

provide a NEON version of arm/sgemm

Author: martin-frbg

kernel/arm/KERNEL.ARMV7

@@ -8,7 +8,7 @@ ZNRM2KERNEL  = nrm2_vfpv3.S
 SGEMVNKERNEL = gemv_n_vfpv3.S
 DGEMVNKERNEL = gemv_n_vfpv3.S
 
-SGEMMKERNEL    =  sgemm_kernel_4x4_vfpv3.S
+SGEMMKERNEL    =  sgemm_kernel_4x4_vfpv3_neon.S
 SGEMMONCOPY    =  sgemm_ncopy_4_vfp.S
 SGEMMOTCOPY    =  sgemm_tcopy_4_vfp.S
 SGEMMONCOPYOBJ =  sgemm_oncopy.o