sh: Fix up kgdb build with modular sh-sci.

Signed-off-by: Paul Mundt <[e-mail]>

arch/sh/Kconfig.debug

···
 
 config SH_KGDB_CONSOLE
 	bool "Console messages through GDB"
-	depends on !SERIAL_SH_SCI_CONSOLE
+	depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y
 	select SERIAL_CORE_CONSOLE
 	default n
 

arch/sh/kernel/kgdb_stub.c

···
 #include <linux/init.h>
 #include <linux/console.h>
 #include <linux/sysrq.h>
+#include <linux/module.h>
 #include <asm/system.h>
 #include <asm/cacheflush.h>
 #include <asm/current.h>
···
 kgdb_bus_error_hook_t *kgdb_bus_err_hook;
 
 int (*kgdb_getchar)(void);
+EXPORT_SYMBOL_GPL(kgdb_getchar);
 void (*kgdb_putchar)(int);
+EXPORT_SYMBOL_GPL(kgdb_putchar);
 
 static void put_debug_char(int c)
 {
···
 #define NUMREGBYTES (MAXREG*4)
 #define OUTBUFMAX (NUMREGBYTES*2+512)
 
-enum regs {
+enum {
 	R0 = 0, R1,  R2,  R3,   R4,   R5,  R6, R7,
 	R8, R9, R10, R11, R12,  R13,  R14, R15,
 	PC, PR, GBR, VBR, MACH, MACL, SR,
···
 
 /* SCI/UART settings, used in kgdb_console_setup() */
 int  kgdb_portnum = CONFIG_KGDB_DEFPORT;
+EXPORT_SYMBOL_GPL(kgdb_portnum);
 int  kgdb_baud = CONFIG_KGDB_DEFBAUD;
+EXPORT_SYMBOL_GPL(kgdb_baud);
 char kgdb_parity = CONFIG_KGDB_DEFPARITY;
+EXPORT_SYMBOL_GPL(kgdb_parity);
 char kgdb_bits = CONFIG_KGDB_DEFBITS;
+EXPORT_SYMBOL_GPL(kgdb_bits);
 
 /* Jump buffer for setjmp/longjmp */
 static jmp_buf rem_com_env;