net: ipa: fix build

After commit 2c7b9b93 ("net: ipa: move configuration data files
into a subdirectory"), build of the ipa driver fails with the
following error:

drivers/net/ipa/data/ipa_data-v3.1.c:9:10: fatal error: gsi.h: No such file or directory

After the mentioned commit, all the file included by the configuration
are in the parent directory. Fix the issue updating the include path.

Fixes: 2c7b9b93 ("net: ipa: move configuration data files into a subdirectory")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/7105112c38cfe0642a2d9e1779bf784a7aa63d16.1658411666.git.pabeni@redhat.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>