mmc: atmel-mci: modify CLKDIV displaying in debugfs

Modify clock division displaying in debugfs for matching
the new CLKDIV,CLKODD user interface arrangement.
Is using the has_odd_clk_div property to choose the proper format.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>