ssb: add Kconfig entry for compiling SoC related code

This allows saving a little of space when not using ssb on Broadcom SoC.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

arch/mips/bcm47xx/Kconfig

@@ -4,6 +4,7 @@ config BCM47XX_SSB
 	bool "SSB Support for Broadcom BCM47XX"
 	select SYS_HAS_CPU_BMIPS32_3300
 	select SSB
+	select SSB_HOST_SOC
 	select SSB_DRIVER_MIPS
 	select SSB_DRIVER_EXTIF
 	select SSB_EMBEDDED

drivers/ssb/Kconfig

@@ -80,6 +80,15 @@ config SSB_SDIOHOST
 
 	  If unsure, say N
 
+config SSB_HOST_SOC
+	bool "Support for SSB bus on SoC"
+	depends on SSB
+	help
+	  Host interface for a SSB directly mapped into memory. This is
+	  for some Broadcom SoCs from the BCM47xx and BCM53xx lines.
+
+	  If unsure, say N
+
 config SSB_SILENT
 	bool "No SSB kernel messages"
 	depends on SSB && EXPERT

drivers/ssb/Makefile

@@ -7,7 +7,7 @@ ssb-$(CONFIG_SSB_SPROM)			+= sprom.o
 ssb-$(CONFIG_SSB_PCIHOST)		+= pci.o pcihost_wrapper.o
 ssb-$(CONFIG_SSB_PCMCIAHOST)		+= pcmcia.o bridge_pcmcia_80211.o
 ssb-$(CONFIG_SSB_SDIOHOST)		+= sdio.o
-ssb-y					+= host_soc.o
+ssb-$(CONFIG_SSB_HOST_SOC)		+= host_soc.o
 
 # built-in drivers
 ssb-y					+= driver_chipcommon.o

drivers/ssb/main.c

@@ -761,6 +761,7 @@ int ssb_bus_sdiobus_register(struct ssb_bus *bus, struct sdio_func *func,
 EXPORT_SYMBOL(ssb_bus_sdiobus_register);
 #endif /* CONFIG_SSB_PCMCIAHOST */
 
+#ifdef CONFIG_SSB_HOST_SOC
 int ssb_bus_ssbbus_register(struct ssb_bus *bus, unsigned long baseaddr,
 			    ssb_invariants_func_t get_invariants)
 {
@@ -777,6 +778,7 @@ int ssb_bus_ssbbus_register(struct ssb_bus *bus, unsigned long baseaddr,
 
 	return err;
 }
+#endif
 
 int __ssb_driver_register(struct ssb_driver *drv, struct module *owner)
 {

drivers/ssb/ssb_private.h

@@ -161,7 +161,9 @@ static inline int ssb_sdio_init(struct ssb_bus *bus)
  * host_soc.c
  **************************************************/
 
+#ifdef CONFIG_SSB_HOST_SOC
 extern const struct ssb_bus_ops ssb_host_soc_ops;
+#endif
 
 /* scan.c */
 extern const char *ssb_core_name(u16 coreid);