UPSTREAM: modules: mark each_symbol_section static

each_symbol_section is only used inside of module.c.

Bug: 157965270
Bug: 171277690
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
(cherry picked from commit a54e04914c211b5678602a46b3ede5d82ec1327d)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5debe30f150847281874d9b2c47952f9036d37d2