x86: moved function declarations out from AMD microcode patch loader to heade file

Signed-off-by: Peter Oruba <peter.oruba@amd.com>
Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/microcode_amd.c

@@ -56,9 +56,6 @@ MODULE_LICENSE("GPL v2");
 	((((struct microcode_amd *)mc)->hdr.mc_patch_data_len * 28) \
 	 + MC_HEADER_SIZE)
 
-extern int microcode_init(void *opaque, struct module *module);
-extern void microcode_exit(void);
-
 /* serialize access to the physical write */
 static DEFINE_SPINLOCK(microcode_update_lock);