env: Rename environment to embedded_environment

The name 'environment' is widely used in U-Boot so is not a very useful
name of a variable. Rename it to better indicate its purpose.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/tools/envcrc.c b/tools/envcrc.c
index 5059492..7eb7246 100644
--- a/tools/envcrc.c
+++ b/tools/envcrc.c
@@ -61,7 +61,7 @@
 #ifdef CONFIG_BUILD_ENVCRC
 # include <environment.h>
 extern unsigned int env_size;
-extern env_t environment;
+extern env_t embedded_environment;
 #endif	/* CONFIG_BUILD_ENVCRC */
 
 extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
@@ -71,7 +71,7 @@
 #ifdef CONFIG_BUILD_ENVCRC
 	unsigned char pad = 0x00;
 	uint32_t crc;
-	unsigned char *envptr = (unsigned char *)&environment,
+	unsigned char *envptr = (unsigned char *)&embedded_environment,
 		*dataptr = envptr + ENV_HEADER_SIZE;
 	unsigned int datasize = ENV_SIZE;
 	unsigned int eoe;