MFC r350988:

Add PNP_INFO to the gpiopps driver.

MFC r349472:

Follow r349460 to complete removing "flags" in struct gpiobus_ivar

Sponsored by: The FreeBSD Foundation

MFC r349460: gpiobus: provide a new hint, pin_list

"pin_list" allows to specify child pins as a list of pin numbers.
Existing hint "pins" serves the same purpose but with a 32-bit wide bit
mask. On

MFC r349460: gpiobus: provide a new hint, pin_list

"pin_list" allows to specify child pins as a list of pin numbers.
Existing hint "pins" serves the same purpose but with a 32-bit wide bit
mask. One problem with that is that a controller can have more than 32
pins. One example is amdgpio. Also, a list of numbers is a little bit
more human friendly than a matching bit mask. As a side note, it seems
that in FDT pins are typically specified by their numbers as well.

This commit also adds accessors for instance variables (IVARs) that
define the child pins. My primary goal is to allow a child to be
configured programmatically rather than via hints (assuming that FDT is
not supported on a platform). Also, while a child should not care about
specific pin numbers that are allocated to it, it could be interested in
how many were actually assigned to it.

While there, I removed "flags" instance variable. It was unused.

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MFC r348153-r348155: gpioled: add a new hint for initial state

hint.gpioled.%d.state determines the initial state of the LED when the
driver takes control over it:
0 - the LED is off
1 - the LED

MFC r348153-r348155: gpioled: add a new hint for initial state

hint.gpioled.%d.state determines the initial state of the LED when the
driver takes control over it:
0 - the LED is off
1 - the LED is on
-1 - the LED is kept as it was

While here, add a module version declaration.

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