[RFC] checkpatch: don't complain about SPDX tag format

[Stephen Hemminger <stephen@networkplumber.org>]

Since DPDK developers have decided to use a different tag format
than the kernel developers, ignore warnings about SPDX tags.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
IMHO would have been better to use the kernel SPDX style and
keep the check but that appears to be a minority opinion.

 devtools/checkpatches.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devtools/checkpatches.sh b/devtools/checkpatches.sh
index 7676a6b50141..b438fbcd6737 100755
--- a/devtools/checkpatches.sh
+++ b/devtools/checkpatches.sh
@@ -42,7 +42,7 @@ options="--no-tree"
 options="$options --max-line-length=$length"
 options="$options --show-types"
 options="$options --ignore=LINUX_VERSION_CODE,\
-FILE_PATH_CHANGES,MAINTAINERS_STYLE,\
+FILE_PATH_CHANGES,MAINTAINERS_STYLE,SPDX_LICENSE_TAG,\
 VOLATILE,PREFER_PACKED,PREFER_ALIGNED,PREFER_PRINTF,\
 PREFER_KERNEL_TYPES,BIT_MACRO,CONST_STRUCT,\
 SPLIT_STRING,LONG_LINE_STRING,\
-- 
2.17.0