[POWERPC] briq_panel Kconfig fix

drivers/char/briq_panel.c:28:22: error: asm/prom.h: No such file or directory

Cc: Jeremy Kerr <jk@ozlabs.org>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

drivers/char/Kconfig

@@ -497,6 +497,7 @@ config LEGACY_PTY_COUNT
 
 config BRIQ_PANEL
 	tristate 'Total Impact briQ front panel driver'
+	depends on PPC
 	---help---
 	  The briQ is a small footprint CHRP computer with a frontpanel VFD, a
 	  tristate led and two switches. It is the size of a CDROM drive.