[U-Boot] CONFIG_ENV_ADDR incorrect in MPC8313ERDB.h

[Norbert van Bolhuis]

I built the latest u-boot for MPC8313E-RDB, flashed it, and ran into trouble
after saving my environment to flash.

I'm using git://git.denx.de/u-boot-nand-flash.git (I believe the "problem" is in
other gits as well).
I'm booting from NOR flash ('make MPC8313ERDB_33_config')

The problem is CONFIG_ENV_ADDR in MPC8313ERDB.h, it says:
#define CONFIG_SYS_MONITOR_BASE TEXT_BASE       /* start of monitor */
#define CONFIG_SYS_MONITOR_LEN          (256 * 1024)    /* Reserve 256 kB for Mon */
#define CONFIG_ENV_ADDR (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)

I'm not sure what 'monitor' is, but the above makes CONFIG_ENV_ADDR = 0xfe040000.
This is incorrect since the resulting u-boot.bin is (in my case) 265356=0x40c8c bytes.

So the saveenv overwrites u-boot itself (in my case the av_ variable, causing
(k)malloc to crash every next reboot).

Although it is only a customization, setting the default CONFIG_ENV_ADDR to a correct
value would save 8313E-RDB u-boot users like me the trouble finding this.

"#define CONFIG_ENV_ADDR 0xfe080000" works fine for me.