kconfig: remove unneeded dependency on !SPL_BUILD

Now CONFIG_SPL_BUILD is not defined in Kconfig, so
"!depends on SPL_BUILD" and "if !SPL_BUILD" are redundant.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index 8569167..8615248 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -27,22 +27,22 @@
 	default y
 
 config DM
-	default y if !SPL_BUILD
+	default y
 
 config DM_SERIAL
-	default y if !SPL_BUILD
+	default y
 
 config DM_SPI
-	default y if !SPL_BUILD
+	default y
 
 config DM_SPI_FLASH
-	default y if !SPL_BUILD
+	default y
 
 config DM_I2C
-	default y if !SPL_BUILD
+	default y
 
 config DM_GPIO
-	default y if !SPL_BUILD
+	default y
 
 source "arch/arm/mach-tegra/tegra20/Kconfig"
 source "arch/arm/mach-tegra/tegra30/Kconfig"