Benjamin Herrenschmidt e3013f5754 litedram: Use 32-bit CSR bus
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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litedram-wrapper.vhdl litedram: Use 32-bit CSR bus
litedram_core.init litedram: Use 32-bit CSR bus
litedram_core.v litedram: Use 32-bit CSR bus