arm64: dts: ls1028a: declare the Integrated Endpoint Register Block node

commit 1f74400c0a551813db95ee23fac6ea1000f61e45 from
git://source.codeaurora.org/external/qoriq/qoriq-components/linux



Add a node describing the address in the SoC memory space for the IERB.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit b764dc6c)
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Meng Li <Meng.Li@windriver.com>