ltrace: Fix build on mips

Newer kernel UAPI headers for mips have moved these needed defines
around

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/ltrace/ltrace_git.bb

@@ -27,6 +27,7 @@ SRC_URI = "git://github.com/sparkleholic/ltrace.git;branch=master;protocol=http
            file://0001-mips-plt.c-Delete-include-error.h.patch \
            file://0001-move-fprintf-into-same-block-where-modname-and-symna.patch \
            file://0001-hook-Do-not-append-int-to-std-string.patch \
+           file://include_unistd_nr.patch \
            "
 S = "${WORKDIR}/git"