powerpc/ps3: move udbg_shutdown_ps3gelic prototype

Allmodconfig kernels produce a missing-prototypes warning:

arch/powerpc/platforms/ps3/gelic_udbg.c:239:6: error: no previous prototype for 'udbg_shutdown_ps3gelic' [-Werror=missing-prototypes]

Move the declaration from a local header to asm/ps3.h where it can be
seen from both the caller and the definition.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
[mpe: Drop CONFIG_PS3GELIC_UDBG to fix build error]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231108125843.3806765-18-arnd@kernel.org

arch/powerpc/Kconfig.debug

@@ -271,7 +271,6 @@ config PPC_EARLY_DEBUG_USBGECKO
 config PPC_EARLY_DEBUG_PS3GELIC
 	bool "Early debugging through the PS3 Ethernet port"
 	depends on PPC_PS3
-	select PS3GELIC_UDBG
 	help
 	  Select this to enable early debugging for the PlayStation3 via
 	  UDP broadcasts sent out through the Ethernet port.

arch/powerpc/include/asm/ps3.h

@@ -514,4 +514,10 @@ u64 ps3_get_spe_id(void *arg);
 
 void ps3_early_mm_init(void);
 
+#ifdef CONFIG_PPC_EARLY_DEBUG_PS3GELIC
+void udbg_shutdown_ps3gelic(void);
+#else
+static inline void udbg_shutdown_ps3gelic(void) {}
+#endif
+
 #endif

arch/powerpc/platforms/ps3/Kconfig

@@ -167,16 +167,4 @@ config PS3_LPM
 	  profiling support of the Cell processor with programs like
 	  perfmon2, then say Y or M, otherwise say N.
 
-config PS3GELIC_UDBG
-	bool "PS3 udbg output via UDP broadcasts on Ethernet"
-	depends on PPC_PS3
-	help
-	  Enables udbg early debugging output by sending broadcast UDP
-	  via the Ethernet port (UDP port number 18194).
-
-	  This driver uses a trivial implementation and is independent
-	  from the main PS3 gelic network driver.
-
-	  If in doubt, say N here.
-
 endmenu

arch/powerpc/platforms/ps3/Makefile

@@ -3,7 +3,7 @@ obj-y += setup.o mm.o time.o hvcall.o htab.o repository.o
 obj-y += interrupt.o exports.o os-area.o
 obj-y += system-bus.o
 
-obj-$(CONFIG_PS3GELIC_UDBG) += gelic_udbg.o
+obj-$(CONFIG_PPC_EARLY_DEBUG_PS3GELIC) += gelic_udbg.o
 obj-$(CONFIG_SMP) += smp.o
 obj-$(CONFIG_SPU_BASE) += spu.o
 obj-y += device-init.o

arch/powerpc/platforms/ps3/gelic_udbg.c

@@ -14,6 +14,7 @@
 #include <linux/ip.h>
 #include <linux/udp.h>
 
+#include <asm/ps3.h>
 #include <asm/io.h>
 #include <asm/udbg.h>
 #include <asm/lv1call.h>

drivers/net/ethernet/toshiba/ps3_gelic_net.h

@@ -346,12 +346,6 @@ static inline void *port_priv(struct gelic_port *port)
 	return port->priv;
 }
 
-#ifdef CONFIG_PPC_EARLY_DEBUG_PS3GELIC
-void udbg_shutdown_ps3gelic(void);
-#else
-static inline void udbg_shutdown_ps3gelic(void) {}
-#endif
-
 int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask);
 /* shared netdev ops */
 void gelic_card_up(struct gelic_card *card);