[OpenBIOS] [PATCH] libopenbios: fix build for platforms without fw_cfg interface

[Mark Cave-Ayland]

Commit 7130437 "fw_cfg: implement fw-cfg-read-file Forth word" added a binding
for the Forth version of fw_cfg_read_file() into libopenbios/init.c but forgot
to only include the binding when CONFIG_DRIVER_FW_CFG was defined.

This broke the build for platforms which don't have the fw_cfg interface
enabled by default such as x86.

Signed-off-by: Mark Cave-Ayland 
---
 libopenbios/init.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libopenbios/init.c b/libopenbios/init.c
index aa99608..e08df19 100644
--- a/libopenbios/init.c
+++ b/libopenbios/init.c
@@ -28,8 +28,10 @@ openbios_init( void )
    PUSH(pointer2cell((void *)&__context));
    feval("['] __context cell+ !");
    
+#if defined(CONFIG_DRIVER_FW_CFG)
    // Bind the Forth fw_cfg file interface
    bind_func("fw-cfg-read-file", forth_fw_cfg_read_file);
+#endif
    
    // Bind the C implementation of (init-program) into Forth
    bind_func("(init-program)", init_program);