Summary: - SP_SECTION was introduced to allocate spinlock in non-cachable region mainly for Cortex-A to stabilize the NuttX SMP kernel - However, all spinlocks are now allocated in cachable area and works without any problems - So SP_SECTION should be removed to simplify the kernel code Impact: - None Testing: - Build test only Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>