Platform/ARM: Update EINJ base addresses for RD-V3-Cfg1

EINJ buffer base is changed in the RD-V3-Cfg1 platform. Update the
addresses accordingly.

Signed-off-by: Omkar Anand Kulkarni <omkar.kulkarni@arm.com>
Change-Id: I94ab36ffc16dfd090ae8680dad6fae7db031ec8f