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[prim, rom_ctrl] Remove S&P layer from data scrambling
As elaborated on #20788, the S&P layer is disabled in the SRAM scrambling devices in order to improve error detection guarantees, interactions with ECC and timing. In order to minimize changes and keep the implementation around in case it is needed for byte parity at some point, we just set the NumDiffRounds parameter to zero for the modules that leverage prim_ram_1p_scr. In case of rom_ctrl, the functionality is removed entirely. Signed-off-by: Michael Schaffner <[email protected]>
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