configs: Enable SPL_FSL_PBL for some LayerScape platforms

In commit <db4080d56dec>, SPL_FSL_PBL is removed from the configs of
some LayerScape platforms. Actually, SPL_FSL_PBL is needed for SD/NAND
boot on LS1021A/LS1043A/LS1046A to create boot binary having SPL binary
in PBI format concatenated with u-boot binary. SPL_FRAMEWORK is used on
these platforms too.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index a724127..c527617 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -91,20 +91,24 @@
 	  occurrence of non 0xaa bytes.
 	  This default implementation works for stacks growing down only.
 
-menu "PowerPC SPL Boot options"
-	depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
+menu "PowerPC and LayerScape SPL Boot options"
 
 config SPL_NAND_BOOT
 	bool "Load SPL from NAND flash"
+	depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
 
 config SPL_MMC_BOOT
 	bool "Load SPL from SD Card / eMMC"
+	depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
 
 config SPL_SPI_BOOT
 	bool "Load SPL from SPI flash"
+	depends on PPC && (SUPPORT_SPL && !SPL_FRAMEWORK)
 
 config SPL_FSL_PBL
 	bool "Create SPL in Freescale PBI format"
+	depends on (PPC || ARCH_LS1021A || ARCH_LS1043A || ARCH_LS1046A) && \
+		    SUPPORT_SPL
 	help
 	  Create boot binary having SPL binary in PBI format concatenated with
 	  u-boot binary.