The Kconfig currently controlling compilation of this code is:

drivers/pinctrl/nomadik/Kconfig:config PINCTRL_NOMADIK
drivers/pinctrl/nomadik/Kconfig:        bool "Nomadik pin controller driver"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alessandro Rubini <rubini@unipv.it>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>