[PATCH] SRM cleanup for generic Alpha kernels

- alpha_using_srm is #define'd for machine specific kernels, but
  is a real integer variable for generic Alpha kernels. Export
  it...

- The callback_* functions are _always_ there (they might be NOP
  functions owith generic kernels on non-SRM machines).

- srm_env can now be compiled on generic alpha kernels. An
  explicit check for SRM capability was always there:-)

arch/alpha/config.in

@@ -259,7 +259,7 @@ if [ "$CONFIG_PROC_FS" = "y" ]; then
 	"ELF		CONFIG_KCORE_ELF	\
 	 A.OUT		CONFIG_KCORE_AOUT" ELF
 fi
-if [ "$CONFIG_PROC_FS" != "n" -a "$CONFIG_ALPHA_SRM" = "y" ]; then
+if [ "$CONFIG_PROC_FS" != "n" ]; then
    tristate 'SRM environment through procfs' CONFIG_SRM_ENV
 fi
  

arch/alpha/kernel/alpha_ksyms.c

@@ -58,11 +58,12 @@ EXPORT_SYMBOL(disable_irq_nosync);
 EXPORT_SYMBOL(probe_irq_mask);
 EXPORT_SYMBOL(screen_info);
 EXPORT_SYMBOL(perf_irq);
-#ifdef CONFIG_ALPHA_SRM
 EXPORT_SYMBOL(callback_getenv);
 EXPORT_SYMBOL(callback_setenv);
 EXPORT_SYMBOL(callback_save_env);
-#endif /* CONFIG_ALPHA_SRM */
+#ifdef CONFIG_ALPHA_GENERIC
+EXPORT_SYMBOL(alpha_using_srm);
+#endif /* CONFIG_ALPHA_GENERIC */
 
 /* platform dependent support */
 EXPORT_SYMBOL(_inb);