[PATCH] backport-include: add newly introduced macros in cordic.h

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The kernel header file linux/cordic.h changed in v5.0 kernel
resulting in backport build to fail for brcmsmac (and probably
b43 as well). So backport those definitions for older kernels.

Signed-off-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>

It has been a while since I submitted or did anything with the backports
repo. I was using it on Ubuntu 14.04 and had a problem building coccinelle
v1.0.7. I finally fixed that so I wanted to share here what was going on so
it may help others.

So while building coccinelle it failed with following:

make[1]: Entering directory `/projects/hnd_software_nl/work/arend/utils/coccinelle-1.0.7/bundles/parmap'
/usr/bin/ocamlc.opt -unsafe -I parmap   -c parmap/bytearray.ml -o parmap/bytearray.cmo
File "parmap/bytearray.ml", line 1:
Error: Could not find the .cmi file for interface parmap/bytearray.mli.
make[1]: *** [parmap/bytearray.cmo] Error 2
make[1]: Leaving directory `/projects/hnd_software_nl/work/arend/utils/coccinelle-1.0.7/bundles/parmap'
make: *** [all] Error 2

So what is going on. During configure it is detected that my machine does not
have the parmap ocaml library. This library is also bundled in coccinelle tarbal
so it decides to build that. However, that fails for some reason. I decided to
take a closer look. I found that if I went to bundles/parmap/parmap and run make
there the build went fine so I went along and installed it. Rerun configure picked
up the installed parmap library and the reset of coccinelle build went fine.

So I am back in business and here is the patch that should fix the cordic users.

 backport/backport-include/linux/cordic.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/backport/backport-include/linux/cordic.h b/backport/backport-include/linux/cordic.h
index 67d6a4a..101da91 100644
--- a/backport/backport-include/linux/cordic.h
+++ b/backport/backport-include/linux/cordic.h
@@ -5,6 +5,16 @@

 #include_next <linux/cordic.h>
+#define CORDIC_ANGLE_GEN	39797
+#define CORDIC_FLOAT(X)	(((X) >= 0) \
+		? ((((X) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1) \
+		: -((((-(X)) >> (CORDIC_PRECISION_SHIFT - 1)) + 1) >> 1))


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