RDMA/rxe: Enable ODP in RDMA FLUSH operation

JIRA: https://issues.redhat.com/browse/RHEL-110100
Conflicts:
Include only the RDMA core hunks.

commit 6703cb3
Author: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Date:   Mon Mar 24 16:56:48 2025 +0900

    RDMA/rxe: Enable ODP in RDMA FLUSH operation

    For persistent memories, add rxe_odp_flush_pmem_iova() so that ODP specific
    steps are executed. Otherwise, no additional consideration is required.

    Signed-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
    Link: https://patch.msgid.link/20250324075649.3313968-2-matsuda-daisuke@fujitsu.com
    Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
    Signed-off-by: Leon Romanovsky <leon@kernel.org>

Signed-off-by: Kamal Heib <kheib@redhat.com>

Author: Kamalheib

include/rdma/ib_verbs.h

@@ -325,6 +325,7 @@ enum ib_odp_transport_cap_bits {
 	IB_ODP_SUPPORT_READ	= 1 << 3,
 	IB_ODP_SUPPORT_ATOMIC	= 1 << 4,
 	IB_ODP_SUPPORT_SRQ_RECV	= 1 << 5,
+	IB_ODP_SUPPORT_FLUSH	= 1 << 6,
 };
 
 struct ib_odp_caps {