dropbear: Change the path to find configuration file and add a configuration file for dropbear
dropbear will check "/etc/pam.d/sshd" which comes from package "openssh" \
When enabling pam supporting. But if we only install dropbear \
package without package "openssh", then "dropbear" will not \
find a configuration file.
The changes are as follow for fixing this bug:
- Change the path to find configuration file (/etc/pam.d/sshd --> /etc/pam.d/dropbear)
- Add a configuration file "/etc/pam.d/dropbear"
Signed-off-by: Xiaofeng Yan <xiaofeng.yan@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>