The differentiation between the MCUs is handled in the HAL from Silabs.
So all EXX32 MCUs should use the same soc.c file.
Signed-off-by: Christian Taedcke <hacking@taedcke.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>