This commit adds sys_set_power_state() function with support for EM1
Sleep, EM2 Deep Sleep, EM3 Stop power modes on Silabs SoCs.
Tested on efr32_slwstk6061a board.
Note: No support for efm32hg, efm32wg series at this point due to the
missing possibility of placing function code in RAM, required by errata
in SiLabs library code.
Signed-off-by: Piotr Mienkowski <piotr.mienkowski@gmail.com>
Move the SoC outside of the architecture tree and put them at the same
level as boards and architectures allowing both SoCs and boards to be
maintained outside the tree.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Piotr Mienkowski