ppc4xx: Fix default environment for AMCC boards

Commit 0ad7f0950a9bc0a69b3cd5f34ccf7da25fcf1c6d [ppc4xx: cleanup
default environment for AMCC boards] broke the default env for
many PPC4xx boards. The '\0' character got removed at the end
of some environment commands like "update". This patch adds the
missing '\0' characters again.

Signed-off-by: Stefan Roese <sr@denx.de>
1 file changed