Definitions for snps,dw-apb-uart serial driver.
Originally written for the BST A1000b FADA board (SG2002 / CV181x,
25 MHz UART source clock). Generalized so the same driver also
works on RK3588 boards (24 MHz xin24m crystal) by selecting one of
the sg2002 / rk3588 cargo features, or by calling
[DW8250::init_with_baud_clk] directly with an explicit clock.