ti-pru-sw-edma-driver: do not strip driver

ti-pru-sw-edma-driver: do not strip driver

* Added PACKAGE_STRIP = "no" so that the module will not be
  stripped and can be insmoded into the kernel.  Failure to
  do so results in errors like:
    <module>: module has no symbols (stripped?)
* Changed PR setting to key off changes to MACHINE_KERNEL_PR
  or the SRCREV of the module repository.
* Updated SRC_REV.
* Updated COMAPTIBLE_MACHINE

Signed-off-by: Melissa Watkins <m-watkins@ti.com>
Signed-off-by: Chase Maupin <Chase.Maupin@ti.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>