init: add SYS_GET_DEVICE() macro to bury &__initconfig_* names usage.

Add a macro to retrieve the device structure for a config structure by
name.  This avoids the very error prone activity of the developer
having to *know* the way the internal object is named.

Change-Id: I1d7857d5aad6dfd4b1b46f63b946aad1ae3a6dc4
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
1 file changed