soc: arm: mps2: Enable DSP extension on CPU1

This commit enables the ARM DSP extension on the MPS2 AN521 SoC CPU1
(the CPU1 supports both FPU and DSP).

With this change, the CMSIS-DSP tests running on the
`mps2_an521_remote` board will use the DSP instructions.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
1 file changed