[IA64] mca.h, mca_drv.c: cleanup extern declarations

Move extern declarations of ia64_{reg,unreg}_MCA_extension()
to mca.h.  Delete declaration of ia64_mca_ucmc_other_recover_fp()
which doesn't exist.

Patch supplied by Hidetoshi Seto.
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/mca_drv.c

@@ -39,8 +39,6 @@
 static int sal_rec_max = 10000;
 
 /* from mca.c */
-extern int  ia64_reg_MCA_extension(void*);
-extern void ia64_unreg_MCA_extension(void);
 static ia64_mca_sal_to_os_state_t *sal_to_os_handoff_state;
 static ia64_mca_os_to_sal_state_t *os_to_sal_handoff_state;
 

include/asm-ia64/mca.h

@@ -119,7 +119,8 @@ extern void ia64_mca_ucmc_handler(void);
 extern void ia64_monarch_init_handler(void);
 extern void ia64_slave_init_handler(void);
 extern void ia64_mca_cmc_vector_setup(void);
-extern int  (*ia64_mca_ucmc_other_recover_fp)(void *,ia64_mca_sal_to_os_state_t *,ia64_mca_os_to_sal_state_t *);
+extern int  ia64_reg_MCA_extension(void*);
+extern void ia64_unreg_MCA_extension(void);
 
 #endif /* !__ASSEMBLY__ */
 #endif /* _ASM_IA64_MCA_H */