ARM: Phytec-phyCORE-imx27: Register board env during runtime

Register the board specific environment during runtime using
defaultenv_append_directory() to make it available for multi
image support.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/boards/phytec-phycore-imx27/Makefile

@@ -1,2 +1,3 @@
 obj-y	+= pcm038.o pcm970.o
 lwl-y	+= lowlevel.o
+bbenv-y += defaultenv-pcm038

arch/arm/boards/phytec-phycore-imx27/pcm038.c

@@ -21,6 +21,7 @@
 #include <io.h>
 #include <notifier.h>
 #include <sizes.h>
+#include <envfs.h>
 #include <mach/devices-imx27.h>
 #include <mach/imx-pll.h>
 #include <mach/imx27-regs.h>
@@ -174,6 +175,8 @@ static int pcm038_init(void)
 	/* Clock gating enable */
 	writel(0x00050f08, MX27_SYSCTRL_BASE_ADDR + MX27_GPCR);
 
+	defaultenv_append_directory(defaultenv_pcm038);
+
 	return 0;
 }
 device_initcall(pcm038_init);

arch/arm/configs/phytec-phycore-imx27_defconfig

@@ -17,7 +17,7 @@ CONFIG_CMDLINE_EDITING=y
 CONFIG_AUTO_COMPLETE=y
 CONFIG_MENU=y
 CONFIG_DEFAULT_ENVIRONMENT_GENERIC_NEW=y
-CONFIG_DEFAULT_ENVIRONMENT_PATH="arch/arm/boards/phytec-phycore-imx27/env"
+CONFIG_DEFAULT_ENVIRONMENT_PATH=""
 CONFIG_LONGHELP=y
 CONFIG_CMD_IOMEM=y
 CONFIG_CMD_MEMINFO=y