Keep the Qualcomm patch files LF in checkouts

Windows checkouts with core.autocrlf rewrote them with CRLF, which
changes their pinned hashes and can break git apply in the Linux build
roots.

(cherry picked from commit f6a2fbbe1b573b078cf9123638f32564c19b7a96)
(cherry picked from commit efc9cf49f8)

.gitattributes

@@ -10,3 +10,5 @@ tools/mangoapp/mangoapp text eol=lf
 app/src/main/assets/desktop-removal/*.json text eol=lf
 app/src/main/assets/desktop-removal/*.txt text eol=lf
 *.pdf binary
+# Patches are applied by the Linux build roots and pinned by hash.
+tools/qualcomm/**/*.patch text eol=lf