uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/tools/package-management/createrepo_c/fix-bash-completion-path.patch

@@ -0,0 +1,11 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -117,7 +117,7 @@ OPTION(ENABLE_BASHCOMP "Install Bash autocompletions?" ON)
+ IF (ENABLE_BASHCOMP)
+     pkg_check_modules(BASHCOMP bash-completion)
+     IF (BASHCOMP_FOUND)
+-        execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=completionsdir bash-completion OUTPUT_VARIABLE BASHCOMP_DIR OUTPUT_STRIP_TRAILING_WHITESPACE)
++        SET(BASHCOMP_DIR "@BASHCOMP_DIR@")
+         message("Bash completion directory: ${BASHCOMP_DIR}")
+         INSTALL(FILES createrepo_c.bash DESTINATION ${BASHCOMP_DIR} RENAME createrepo_c)
+         INSTALL(CODE "