efi/cper: Export several helpers for ghes_edac to use

Before ghes_edac can be turned back into a proper module again, export
several helpers which are going to be used by it.

Signed-off-by: Jia He <justin.he@arm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20221010023559.69655-2-justin.he@arm.com

Author: justin-he

drivers/firmware/efi/cper.c

@@ -290,6 +290,7 @@ int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
 
 	return n;
 }
+EXPORT_SYMBOL_GPL(cper_mem_err_location);
 
 int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
 {
@@ -310,6 +311,7 @@ int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
 
 	return n;
 }
+EXPORT_SYMBOL_GPL(cper_dimm_err_location);
 
 void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
 		       struct cper_mem_err_compact *cmem)
@@ -331,6 +333,7 @@ void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
 	cmem->mem_array_handle = mem->mem_array_handle;
 	cmem->mem_dev_handle = mem->mem_dev_handle;
 }
+EXPORT_SYMBOL_GPL(cper_mem_err_pack);
 
 const char *cper_mem_err_unpack(struct trace_seq *p,
 				struct cper_mem_err_compact *cmem)