pinctrl: fix pinconf_dbg_config_write return type
pinctrl: fix pinconf_dbg_config_write return type

Have pinconf_dbg_config_write() return a ssize_t. This fixes the following
compilation warning:

  drivers/pinctrl/pinconf.c:617:2: warning: initialization from incompatible pointer type [enabled by default]
  drivers/pinctrl/pinconf.c:617:2: warning: (near initialization for ‘pinconf_dbg_pinconfig_fops.write’) [enabled by default]

Signed-off-by: Vincent Stehlé <54d054b96e74e554ed4c5f2244963ef0a98f708f@laposte.net>
Cc: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs