Add the 12 GP timers nodes present in OMAP2.
Add the 12 GP timers nodes present in OMAP3.
Add the 11 GP timers nodes present in OMAP4.
Add the 7 GP timers nodes present in AM33xx.

Add documentation for timer properties specific to OMAP.

Thanks to Vaibhav Hiremath for creating the AM33xx timer nodes. I have modified
Vaibhav's original nodes adding information on which timers support a PWM
output.

V5 changes:
- Updated timer register sizes for OMAP2/3/4.
- Modified AM335x timer register size to be 1KB instead of 4KB to align with
  HWMOD.
Signed-off-by: NJon Hunter <jon-hunter@ti.com>
Acked-Reviewed-&-Tested-By: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>

The interrupt-parent attribute does not have to be added in each
node since the fmwk will check for the parent as well to get it.

Create an interrupt-parent for OMAP2, OMAP3, AM33xx and remove the
attributes from every nodes that were using it.
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Sebastien Guiriec <s-guiriec@ti.com>

Add pinctrl driver entries for omap2+. These all use
the generic pinctrl-single driver for the padconf
registers.

Cc: devicetree-discuss@lists.ozlabs.org
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
[tony@atomide.com: updated to drop omap2420.dtsi rename changes]
Signed-off-by: NTony Lindgren <tony@atomide.com>

The McBSP IP within OMAP2420 and 2430 is different we need to create separate
dtsi files for them.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>