SPM: Add FPU support for gnu arm embedded toolchain

1. Enable FP support in SPE by CONFIG_TFM_SPE_FP (0:software, 1:hybird,
   2:hardware) for IPC model.
   It doesn't support LIBRARY model.
2. Enable lazy stacking from SPE by CONFIG_TFM_LAZY_STACKING_SPE (OFF,
   ON).
3. Separate qcbor, t_cose for SPE and NSPE.

Note:
   NSPE is not allowed to use FPU at current stage when FPU is enabled
   for SPE.

Change-Id: I856fdcccbbc403c5ec3689d95df4d082f106ff47
Signed-off-by: Feder Liang <Feder.Liang@arm.com>
18 files changed