spi: s3c64xx: Add missing compatibles

Add compatibles for s3c6410, s5pc100 and s5pc110/s5pv210 boards.

Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>