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/cpu/armv7/omap3/Kconfig b/arch/arm/cpu/armv7/omap3/Kconfig
index 4644098..4a0ac2c 100644
--- a/arch/arm/cpu/armv7/omap3/Kconfig
+++ b/arch/arm/cpu/armv7/omap3/Kconfig
@@ -94,19 +94,19 @@
 endchoice
 
 config DM
-	default y if !SPL_BUILD
+	default y
 
 config DM_GPIO
-	default y if DM && !SPL_BUILD
+	default y if DM
 
 config DM_SERIAL
-	default y if DM && !SPL_BUILD
+	default y if DM
 
 config SYS_MALLOC_F
-	default y if DM && !SPL_BUILD
+	default y if DM
 
 config SYS_MALLOC_F_LEN
-	default 0x400 if DM && !SPL_BUILD
+	default 0x400 if DM
 
 config SYS_SOC
 	default "omap3"