libcec: add patch to fix build on Blackfin

Blackfin uses a gcc 4.3 compiler, which does not support the
-Wno-psabi option. Since it is non essential, this commit adds a patch
to remove the usage of this option.

Fixes:

  http://autobuild.buildroot.net/results/3ab/3ab146583fa57ef7d6e67530b3274df1a844c7e1/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libcec/0001-remove-Wno-psabi.patch

@@ -0,0 +1,21 @@
+Do not use -Wno-psabi option
+
+This option was added in gcc 4.5, and Buildroot still uses gcc 4.3 on
+some architectures. Since it's non essential (only disables some
+warning), let's get rid of it.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+
+Index: b/configure.ac
+===================================================================
+--- a/configure.ac
++++ b/configure.ac
+@@ -137,7 +137,7 @@
+ use_udev="no"
+ use_adapter_detection="yes"
+ use_lockdev="no"
+-SUPPRESS_MANGLING_WARNINGS=" -Wno-psabi"
++SUPPRESS_MANGLING_WARNINGS=""
+ case "${host}" in
+   *-*-linux*)
+     ## search for udev if pkg-config was found