soc: actions: Update SPS help text for S700

Commit 3ad85b08f7789d51e6aad0f535296d1c31e319b9 (soc: actions: sps: Add S700)
added S700 support to the SPS driver but forget to update Kconfig help.

Add missing S700 mention, in preparation for further SoCs.

Fixes: 3ad85b08f778 ("soc: actions: sps: Add S700")
Reported-by: Manivannan Sadhasivam <>
Signed-off-by: Andreas Färber <>
1 file changed