drivers: input: 2w: add options for enable/disable 2w with power button

/sys/module/input_core/parameters/pwrkey_suspend
pwrkey_suspend = Y or N
if yes when screen goes off without touch anything 2w is enabled
otherwise if you use power button is disabled.
You can save your battery with this option on.
drivers: input: 2w: rework s2s and now you can use dt2w with this feature
drivers: input: 2w: hacky solution for unresponsive screen

Thanks @myfluxy
https://github.com/myfluxi/android_kernel_google_msm/commit/cec9539e1dff8f3b7b821b29cc554ab33ca080f2
commit cec9539e1dff8f3b7b821b29cc554ab33ca080f2
drivers: input: 2w: fix problem with hardboot and multitouch

Thanks a lot
@rodries
http://forum.xda-developers.com/showpost.php?p=48062772&postcount=2193
drivers: input: 2w: cleaned s2w_s2sonly unused external integer
drivers: input: 2w: fix compilation with earlyspend
drivers: input: 2w: sweep2wake add mako definitions