datapath: Backport: vxlan: fix incorrect RCO bit in VXLAN header

datapath: Backport: vxlan: fix incorrect RCO bit in VXLAN header

Upstream commit:
    Commit 3511494ce2f3d ("vxlan: Group Policy extension") changed definition of
    VXLAN_HF_RCO from 0x00200000 to BIT(24). This is obviously incorrect. It's
    also in violation with the RFC draft.

    Fixes: 3511494ce2f3d ("vxlan: Group Policy extension")
    Cc: Thomas Graf <tgraf@suug.ch>
    Cc: Tom Herbert <therbert@google.com>
    Signed-off-by: Jiri Benc <jbenc@redhat.com>
    Acked-by: Tom Herbert <tom@herbertland.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
Upstream: c5fb8caaf91 ("vxlan: fix incorrect RCO bit in VXLAN header")
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Jesse Gross <jesse@kernel.org>