mk: Fix debug build error on ARM ThunderX2 and neoverse N1 platform

When building spdk on ARM platform like thunderx2 with --enable-debug,
there are following error:

/tmp/ccOBb4AF.s: Assembler messages:
/tmp/ccOBb4AF.s:45: Error: selected processor does not support `casp x0,x1,x2,x3,[x4]'
/tmp/ccOBb4AF.s:77: Error: selected processor does not support `caspa x0,x1,x2,x3,[x4]'
/tmp/ccOBb4AF.s:109: Error: selected processor does not support `caspl x0,x1,x2,x3,[x4]'
/tmp/ccOBb4AF.s:141: Error: selected processor does not support `caspal x0,x1,x2,x3,[x4]'

The reason is that DPDK is built with -march=armv8.1-a or -march=armv8.2-a+lse which
have these instructions while SPDK is built with -march=armv8-a+crc which does not support
them. Change spdk build machine to native can fix this.

Signed-off-by: Rui Chang <rui.chang@arm.com>
Change-Id: I759d4ce2c557ce5ff73a802d7a4b6579c4ba64f7
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7025


Community-CI: Mellanox Build Bot
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>