mempool/octeontx2: fix possible arm64 ABI break

mempool/octeontx2: fix possible arm64 ABI break

Since direct register access is used in npa_lf_aura_op_alloc_bulk()
use __rte_noinline instead of __rte_always_inline to preserve ABI.
Based on the compiler npa_lf_aura_op_alloc_bulk might be inlined
differently which may lead to undefined behaviour due to handcoded
asm.

Fixes: 29893042c29d ("mempool/octeontx2: fix clang build for arm64")
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>