spdx 3.0: Map gitsm URI to git

"gitsm" is not a recognized URI protocol (outside of bitbake), so map it
to "git" when writing. This should be OK since we report all of the
submodule source code (if enabled), and it's still possible for 3rd
party analyzers to determine that submodules are in use by looking at
.gitmodules.

The code to do the mapping is moved to a common location so it covers
SPDX 2.2 also

[YOCTO #15582]

(From OE-Core rev: 6ecf89c75b1a74515266085acc5d3621a0fb2fa1)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/create-spdx-2.2.bbclass

@@ -354,15 +354,6 @@ def add_download_packages(d, doc, recipe):
             if f.type == "file":
                 continue
 
-            uri = f.type
-            proto = getattr(f, "proto", None)
-            if proto is not None:
-                uri = uri + "+" + proto
-            uri = uri + "://" + f.host + f.path
-
-            if f.method.supports_srcrev():
-                uri = uri + "@" + f.revisions[name]
-
             if f.method.supports_checksum(f):
                 for checksum_id in CHECKSUM_LIST:
                     if checksum_id.upper() not in oe.spdx.SPDXPackage.ALLOWED_CHECKSUMS:
@@ -377,7 +368,7 @@ def add_download_packages(d, doc, recipe):
                     c.checksumValue = expected_checksum
                     package.checksums.append(c)
 
-            package.downloadLocation = uri
+            package.downloadLocation = oe.spdx_common.fetch_data_to_uri(f, name)
             doc.packages.append(package)
             doc.add_relationship(doc, "DESCRIBES", package)
             # In the future, we might be able to do more fancy dependencies,