armv8: ls2080a: Reorganise NAND_BOOT code in config flag

Add CONFIG_NAND_BOOT config flag to organise
NAND_BOOT specific code in config flag like
-nand-boot specfic errata errata_rcw_src()
-CONFIG_SYS_NAND_U_BOOT_DST,etc

Signed-off-by: Santan Kumar <santan.kumar@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Abhimanyu Saini <abhimanyu.saini@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/soc.c

@@ -134,7 +134,7 @@ void erratum_a009635(void)
 
 static void erratum_rcw_src(void)
 {
-#if defined(CONFIG_SPL)
+#if defined(CONFIG_SPL) && defined(CONFIG_NAND_BOOT)
 	u32 __iomem *dcfg_ccsr = (u32 __iomem *)DCFG_BASE;
 	u32 __iomem *dcfg_dcsr = (u32 __iomem *)DCFG_DCSR_BASE;
 	u32 val;

configs/ls2080aqds_nand_defconfig

@@ -10,6 +10,7 @@ CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_NAND_BOOT=y
 CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_BOOTDELAY=10
 CONFIG_SPL=y

configs/ls2080ardb_nand_defconfig

@@ -10,6 +10,7 @@ CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
+CONFIG_NAND_BOOT=y
 CONFIG_SYS_EXTRA_OPTIONS="NAND"
 CONFIG_BOOTDELAY=10
 CONFIG_SPL=y

include/configs/ls2080a_common.h

@@ -233,8 +233,10 @@ unsigned long long get_qixis_addr(void);
 #define CONFIG_SPL_TARGET		"u-boot-with-spl.bin"
 #define CONFIG_SPL_TEXT_BASE		0x1800a000
 
+#ifdef CONFIG_NAND_BOOT
 #define CONFIG_SYS_NAND_U_BOOT_DST	0x80400000
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_NAND_U_BOOT_DST
+#endif
 #define CONFIG_SYS_SPL_MALLOC_SIZE	0x00100000
 #define CONFIG_SYS_SPL_MALLOC_START	0x80200000
 #define CONFIG_SYS_MONITOR_LEN		(640 * 1024)

include/configs/ls2080aqds.h

@@ -198,7 +198,8 @@ unsigned long get_board_ddr_clk(void);
 					FTIM2_GPCM_TWP(0x3E))
 #define CONFIG_SYS_CS3_FTIM3		0x0
 
-#if defined(CONFIG_SPL) && defined(CONFIG_NAND)
+#if defined(CONFIG_SPL)
+#if defined(CONFIG_NAND_BOOT)
 #define CONFIG_SYS_CSPR1_EXT		CONFIG_SYS_NOR0_CSPR_EXT
 #define CONFIG_SYS_CSPR1		CONFIG_SYS_NOR0_CSPR_EARLY
 #define CONFIG_SYS_CSPR1_FINAL		CONFIG_SYS_NOR0_CSPR
@@ -234,6 +235,7 @@ unsigned long get_board_ddr_clk(void);
 #define CONFIG_SPL_PAD_TO		0x20000
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	(256 * 1024)
 #define CONFIG_SYS_NAND_U_BOOT_SIZE	(640 * 1024)
+#endif
 #else
 #define CONFIG_SYS_CSPR0_EXT		CONFIG_SYS_NOR0_CSPR_EXT
 #define CONFIG_SYS_CSPR0		CONFIG_SYS_NOR0_CSPR_EARLY