board: freescale: p1_p2_rdb_pc: Allow to compile it without env support

When env support is disabled then usage of env_init() or env_relocate()
generates linker errors. So do not compile env_init() or env_relocate()
in SPL code when env support is disabled in SPL.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/board/freescale/p1_p2_rdb_pc/spl.c b/board/freescale/p1_p2_rdb_pc/spl.c
index f855f3a..22156f2 100644
--- a/board/freescale/p1_p2_rdb_pc/spl.c
+++ b/board/freescale/p1_p2_rdb_pc/spl.c
@@ -83,12 +83,15 @@
 			CONFIG_SPL_RELOC_MALLOC_SIZE);
 	gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 
+#ifdef CONFIG_SPL_ENV_SUPPORT
 #ifndef CONFIG_SPL_NAND_BOOT
 	env_init();
 #endif
+#endif
 #ifdef CONFIG_SPL_MMC_BOOT
 	mmc_initialize(bd);
 #endif
+#ifdef CONFIG_SPL_ENV_SUPPORT
 	/* relocate environment function pointers etc. */
 #ifdef CONFIG_SPL_NAND_BOOT
 	nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
@@ -98,6 +101,7 @@
 #else
 	env_relocate();
 #endif
+#endif
 
 #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
 	i2c_init_all();