env: Move env_get() to env.h

Move env_get() over to the new header file.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/renesas/alt/alt.c b/board/renesas/alt/alt.c
index 0726776..7797970 100644
--- a/board/renesas/alt/alt.c
+++ b/board/renesas/alt/alt.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <dm.h>
 #include <dm/platform_data/serial_sh.h>
diff --git a/board/renesas/gose/gose.c b/board/renesas/gose/gose.c
index 7c61008..bffa85c 100644
--- a/board/renesas/gose/gose.c
+++ b/board/renesas/gose/gose.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <dm.h>
 #include <dm/platform_data/serial_sh.h>
diff --git a/board/renesas/koelsch/koelsch.c b/board/renesas/koelsch/koelsch.c
index d07a7ca..1bb3b49 100644
--- a/board/renesas/koelsch/koelsch.c
+++ b/board/renesas/koelsch/koelsch.c
@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <dm.h>
 #include <dm/platform_data/serial_sh.h>
diff --git a/board/renesas/lager/lager.c b/board/renesas/lager/lager.c
index f062bb0..bda3295 100644
--- a/board/renesas/lager/lager.c
+++ b/board/renesas/lager/lager.c
@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <environment.h>
 #include <malloc.h>
 #include <netdev.h>
diff --git a/board/renesas/porter/porter.c b/board/renesas/porter/porter.c
index 2e15a4c..d3afc2a 100644
--- a/board/renesas/porter/porter.c
+++ b/board/renesas/porter/porter.c
@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <dm.h>
 #include <dm/platform_data/serial_sh.h>
diff --git a/board/renesas/silk/silk.c b/board/renesas/silk/silk.c
index 59ba262..bda6a41 100644
--- a/board/renesas/silk/silk.c
+++ b/board/renesas/silk/silk.c
@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <dm.h>
 #include <dm/platform_data/serial_sh.h>
diff --git a/board/renesas/stout/stout.c b/board/renesas/stout/stout.c
index 7c51595..95b5711 100644
--- a/board/renesas/stout/stout.c
+++ b/board/renesas/stout/stout.c
@@ -9,6 +9,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <netdev.h>
 #include <dm.h>