powerpc/c29xpcie: 8k page size NAND boot support base on TPL/SPL

Using the TPL/SPL method to booting from 8k page NAND flash.
	- Add 256kB size SRAM tlb for second step booting;
	- Add spl.c for TPL image boot;
	- Add spl_minimal.c for minimal SPL image;
	- Add C29XPCIE_NAND configure;
	- Modify C29XPCIE.h for nand config and enviroment;

Signed-off-by: Po Liu <Po.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/c29xpcie/Makefile b/board/freescale/c29xpcie/Makefile
index 626d48a..818484a 100644
--- a/board/freescale/c29xpcie/Makefile
+++ b/board/freescale/c29xpcie/Makefile
@@ -3,8 +3,23 @@
 #
 # SPDX-License-Identifier:	GPL-2.0+
 
+MINIMAL=
+ifdef CONFIG_SPL_BUILD
+ifdef CONFIG_SPL_INIT_MINIMAL
+MINIMAL=y
+endif
+endif
+
+ifdef MINIMAL
+obj-y	+= spl_minimal.o tlb.o law.o
+else
+ifdef CONFIG_SPL_BUILD
+obj-y	+= spl.o
+endif
+
 obj-y	+= c29xpcie.o
 obj-y	+= cpld.o
 obj-y	+= ddr.o
 obj-y	+= law.o
 obj-y	+= tlb.o
+endif