soc: fsl: dpio: remove set but not used 'addr_cena'

This addresses the following gcc warning with "make W=1":

drivers/soc/fsl/dpio/qbman-portal.c: In function
‘qbman_swp_enqueue_multiple_direct’:
drivers/soc/fsl/dpio/qbman-portal.c:650:11: warning: variable
‘addr_cena’ set but not used [-Wunused-but-set-variable]
  650 |  uint64_t addr_cena;
      |           ^~~~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

drivers/soc/fsl/dpio/qbman-portal.c

@@ -647,7 +647,6 @@ int qbman_swp_enqueue_multiple_direct(struct qbman_swp *s,
 	const uint32_t *cl = (uint32_t *)d;
 	uint32_t eqcr_ci, eqcr_pi, half_mask, full_mask;
 	int i, num_enqueued = 0;
-	uint64_t addr_cena;
 
 	spin_lock(&s->access_spinlock);
 	half_mask = (s->eqcr.pi_ci_mask>>1);
@@ -701,7 +700,6 @@ int qbman_swp_enqueue_multiple_direct(struct qbman_swp *s,
 
 	/* Flush all the cacheline without load/store in between */
 	eqcr_pi = s->eqcr.pi;
-	addr_cena = (size_t)s->addr_cena;
 	for (i = 0; i < num_enqueued; i++)
 		eqcr_pi++;
 	s->eqcr.pi = eqcr_pi & full_mask;