ARM: dts: s5pv210: Remove hardcoded bootargs on Galaxy S and Fascinate 4G

Since we have U-Boot (flashed in place of stock kernel), it's not needed
anymore to hardcode bootargs on every Aries-family board.

Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
[krzk: Squash changes to fascinate4g and galaxys into one commit]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>