driver core: Split devres APIs to device/devres.h

driver core: Split devres APIs to device/devres.h

device.h is a huge header which is hard to follow and easy to miss
something. Improve that by splitting devres APIs to device/devres.h.

In particular this helps to speedup the build of the code that includes
device.h solely for a devres APIs.

While at it, cast the error pointers to __iomem using IOMEM_ERR_PTR()
and fix sparse warnings.

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>