void ibm405gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk);
void ibm405ep_fixup_clocks(unsigned int sys_clk);
+void ibm405ex_fixup_clocks(unsigned int sys_clk, unsigned int uart_clk);
void ibm440gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk);
void ibm440ep_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk,
unsigned int tmr_clk);