Revert "Revert "Adding e4crypt support""

Fix build break caused by original change

This reverts commit 84b0bab58fcc7f225e9a17a15c531b0c2fc509c5.

Change-Id: I99fbd7c3d1ed92db1f546033c8493bb71a327924
diff --git a/init/keywords.h b/init/keywords.h
index 09f645b..34cb2ad 100644
--- a/init/keywords.h
+++ b/init/keywords.h
@@ -11,6 +11,7 @@
 int do_hostname(int nargs, char **args);
 int do_ifup(int nargs, char **args);
 int do_insmod(int nargs, char **args);
+int do_installkey(int nargs, char **args);
 int do_mkdir(int nargs, char **args);
 int do_mount_all(int nargs, char **args);
 int do_mount(int nargs, char **args);
@@ -61,6 +62,7 @@
     KEYWORD(hostname,    COMMAND, 1, do_hostname)
     KEYWORD(ifup,        COMMAND, 1, do_ifup)
     KEYWORD(insmod,      COMMAND, 1, do_insmod)
+    KEYWORD(installkey,  COMMAND, 1, do_installkey)
     KEYWORD(import,      SECTION, 1, 0)
     KEYWORD(keycodes,    OPTION,  0, 0)
     KEYWORD(mkdir,       COMMAND, 1, do_mkdir)