env_nvram: Move conditional compilation to Makefile

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/common/env_nvram.c b/common/env_nvram.c
index c877f00..c59bf9f 100644
--- a/common/env_nvram.c
+++ b/common/env_nvram.c
@@ -41,15 +41,12 @@
  */
 
 #include <common.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#ifdef CONFIG_ENV_IS_IN_NVRAM /* Environment is in NVRAM */
-
 #include <command.h>
 #include <environment.h>
 #include <linux/stddef.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #ifdef CFG_NVRAM_ACCESS_ROUTINE
 extern void *nvram_read(void *dest, const long src, size_t count);
 extern void nvram_write(long dest, const void *src, size_t count);
@@ -156,5 +153,3 @@
 #endif
 	return (0);
 }
-
-#endif /* CONFIG_ENV_IS_IN_NVRAM */