gentree.py: Remoace space between -I and $(src)

When I compile backports on Debian 9 against kernel 4.9 it fails to
compile because the include "-I $(src)" does not work, the "-I" is
somehow lost. When I remove the space between this it is working.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/gentree.py b/gentree.py
index 2a9f60d7..1fc9dbb1 100755
--- a/gentree.py
+++ b/gentree.py
@@ -1043,7 +1043,7 @@ def process(kerneldir, copy_list_file, git_revision=None,
             for r in regexes:
                 data = r.sub(r'' + bpid.full_prefix + '\\1', data)
             # we have an absolue path in $(src) since we compile out of tree
-            data = re.sub(r'\$\(srctree\)/\$\(src\)', '$(src)', data)
+            data = re.sub(r'-I ?\$\(srctree\)/\$\(src\)', '-I$(src)', data)
             data = re.sub(r'\$\(srctree\)', '$(backport_srctree)', data)
             data = re.sub(r'-Idrivers', '-I$(backport_srctree)/drivers', data)
             if bpid.integrate: