MCP413x_503
.data = &mcp4131_cfg[MCP413x_503] },
.data = &mcp4131_cfg[MCP413x_503] },
{ "mcp4131-503", MCP413x_503 },
{ "mcp4132-503", MCP413x_503 },
[MCP413x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },