arm: mx6: Fix missing Kconfig option for Novena

Add two missing Kconfig options for Novena and drop the SPL
from the Novena config.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Sean Cross <xobs@kosagi.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7e26744..3955978 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -633,6 +633,7 @@
 config TARGET_KOSAGI_NOVENA
 	bool "Support Kosagi Novena"
 	select CPU_V7
+	select SUPPORT_SPL
 
 config TARGET_TQMA6
 	bool "TQ Systems TQMa6 board"