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/drivers/net/dc2114x.c b/drivers/net/dc2114x.c
index e3c403c..43c2253 100644
--- a/drivers/net/dc2114x.c
+++ b/drivers/net/dc2114x.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <net.h>
 #include <netdev.h>
diff --git a/drivers/net/fm/fdt.c b/drivers/net/fm/fdt.c
index 6125797..72d1294 100644
--- a/drivers/net/fm/fdt.c
+++ b/drivers/net/fm/fdt.c
@@ -3,6 +3,7 @@
  * Copyright 2016 Freescale Semiconductor, Inc.
  */
 #include <asm/io.h>
+#include <env.h>
 #include <fsl_qe.h>	/* For struct qe_firmware */
 
 #ifdef CONFIG_SYS_DPAA_FMAN
diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index cc59b21..1d96e4b 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -5,6 +5,7 @@
  * Copyright 2017-2018 NXP
  */
 #include <common.h>
+#include <env.h>
 #include <errno.h>
 #include <linux/bug.h>
 #include <asm/io.h>
diff --git a/drivers/net/fsl_mcdmafec.c b/drivers/net/fsl_mcdmafec.c
index 88309b1..41752c0 100644
--- a/drivers/net/fsl_mcdmafec.c
+++ b/drivers/net/fsl_mcdmafec.c
@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <environment.h>
 #include <malloc.h>
 #include <command.h>
diff --git a/drivers/net/ftmac100.c b/drivers/net/ftmac100.c
index c08889c..d8f1dde 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -8,6 +8,7 @@
 
 #include <config.h>
 #include <common.h>
+#include <env.h>
 #include <malloc.h>
 #include <net.h>
 #include <linux/io.h>
diff --git a/drivers/net/mcffec.c b/drivers/net/mcffec.c
index 2b54e3a..a8553cb 100644
--- a/drivers/net/mcffec.c
+++ b/drivers/net/mcffec.c
@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <env.h>
 #include <environment.h>
 #include <malloc.h>
 
diff --git a/drivers/net/phy/micrel_ksz90x1.c b/drivers/net/phy/micrel_ksz90x1.c
index f18e40a..0105fc5 100644
--- a/drivers/net/phy/micrel_ksz90x1.c
+++ b/drivers/net/phy/micrel_ksz90x1.c
@@ -10,6 +10,7 @@
  */
 #include <common.h>
 #include <dm.h>
+#include <env.h>
 #include <errno.h>
 #include <micrel.h>
 #include <phy.h>
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 2d5c970..e2ca474 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -10,6 +10,7 @@
 
 #include <config.h>
 #include <common.h>
+#include <env.h>
 #include <environment.h>
 #include <malloc.h>
 #include <net.h>