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Armada-7K/8K and CN913x integrated the Rambus EIP-97 IP on CP11x die. It supports to generate up to 4 32-bit random number in one shot. This trivial driver provisions a simple API to read the random numbers from hardware. It allows the bootloader to get one 32-bit or 64-bit random number via SMC call to support KASLR. Change-Id: I1707a85512ca163b8c7ab1644ff0f7e2fcf57344 Signed-off-by: Wilson Ding <dingwei@marvell.com>