ARM: dts: exynos: Fix language typo and indentation

Correct language typo and wrong indentation.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos4210.dtsi

@@ -8,7 +8,7 @@
  *		www.linaro.org
  *
  * Samsung's Exynos4210 SoC device nodes are listed in this file. Exynos4210
- * based board files can include this file and provide values for board specfic
+ * based board files can include this file and provide values for board specific
  * bindings.
  *
  * Note: This file does not include device nodes for all the controllers in