pinctrl: single: Remove invalid message

Pinctrl single should just show how many pins were found, the physical
address is already in the dev information. So let's remove the wrong
information that claims to show the physical address but really prints
a virtual address that is now hashed.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>