Method release

src/platforms/arm/sam/fastspi_arm_sam.h:277–284

release the CS select

	// release the CS select
	void inline release() FL_NOEXCEPT __attribute__((always_inline)) {
		if (mInitialized) {
			::SPI.endTransaction();
		}
		if(mPSelect != nullptr) {
			mPSelect->release();
		}
	}

	void endTransaction() FL_NOEXCEPT {
		waitFully();