Config: Exynos5800: Enable build for Peach-Pi

This adds following things :
- New config and defconfig for Peach-Pi board.
- Alterations in Kconfig and MAINTAINERS.
- Addition of CONFIG_EXYNOS5800.
- ADdition of exynos5800-peach-pi in dts list.

Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/cpu/armv7/exynos/Kconfig b/arch/arm/cpu/armv7/exynos/Kconfig
index 090be93..13dbd95 100644
--- a/arch/arm/cpu/armv7/exynos/Kconfig
+++ b/arch/arm/cpu/armv7/exynos/Kconfig
@@ -44,11 +44,16 @@
 	select SUPPORT_SPL
 	select OF_CONTROL if !SPL_BUILD
 
-config TARGET_PEACH_PIT
+config TARGET_PEACH_PI
 	bool "Peach Pi board"
 	select SUPPORT_SPL
 	select OF_CONTROL if !SPL_BUILD
 
+config TARGET_PEACH_PIT
+	bool "Peach Pit board"
+	select SUPPORT_SPL
+	select OF_CONTROL if !SPL_BUILD
+
 endchoice
 
 config SYS_SOC