configs: fsl: move bootrom specific defines to Kconfig

Moves below bootrom specific defines to Kconfig:

    CONFIG_SYS_FSL_BOOTROM_BASE
    CONFIG_SYS_FSL_BOOTROM_SIZE

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index 4d46587..ae0b7b2 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -640,3 +640,13 @@
 	help
 	  For some SoC(such as LS1043A and LS1046A), USB and QE-HDLC multiplex use
 	  pins, select it when the pins are assigned to USB.
+
+config SYS_FSL_BOOTROM_BASE
+	hex
+	depends on FSL_LSCH2
+	default 0
+
+config SYS_FSL_BOOTROM_SIZE
+	hex
+	depends on FSL_LSCH2
+	default 0x1000000