dropbear: We need modify file option.h besides enabling pam in \
configure if we want dropbear to support pam.

Upstream-Status: Pending

Signed-off-by: Xiaofeng Yan <xiaofeng.yan@windriver.com>

--- a/options.h	2011-07-12 13:27:39.008819183 +0800
+++ b/options.h.new	2011-07-12 13:37:37.780819308 +0800
@@ -149,9 +149,9 @@
  * but there's an interface via a PAM module - don't bother using it otherwise.
  * You can't enable both PASSWORD and PAM. */
 
-#define ENABLE_SVR_PASSWORD_AUTH
+//#define ENABLE_SVR_PASSWORD_AUTH
 /* PAM requires ./configure --enable-pam */
-/*#define ENABLE_SVR_PAM_AUTH*/
+#define ENABLE_SVR_PAM_AUTH
 #define ENABLE_SVR_PUBKEY_AUTH
 
 /* Wether to ake public key options in authorized_keys file into account */