arm: Introduce new CONFIG_SPL_SYS_NO_VECTOR_TABLE option

Move OMAP4 specific option for disabling overwriting vector table into
config option CONFIG_SPL_SYS_NO_VECTOR_TABLE.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index efe33a5..10726ea 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -57,6 +57,10 @@
 	  that the early malloc region, global data (gd), and early stack usage
 	  do not overlap any appended DTB.
 
+config SPL_SYS_NO_VECTOR_TABLE
+	depends on SPL
+	bool
+
 config LINUX_KERNEL_IMAGE_HEADER
 	depends on ARM64
 	bool