Yocto 2.4

Move OpenBMC to Yocto 2.4(rocko)

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I12057b18610d6fb0e6903c60213690301e9b0c67
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/import-layers/yocto-poky/meta/recipes-devtools/m4/m4.inc b/import-layers/yocto-poky/meta/recipes-devtools/m4/m4.inc
index 4a83929..2002594 100644
--- a/import-layers/yocto-poky/meta/recipes-devtools/m4/m4.inc
+++ b/import-layers/yocto-poky/meta/recipes-devtools/m4/m4.inc
@@ -1,4 +1,5 @@
 SUMMARY = "Traditional Unix macro processor"
+HOMEPAGE = "https://www.gnu.org/software/m4/m4.html"
 DESCRIPTION = "GNU m4 is an implementation of the traditional Unix macro processor.  It is mostly SVR4 \
 compatible although it has some extensions (for example, handling more than 9 positional parameters to macros). \
 GNU M4 also has built-in functions for including files, running shell commands, doing arithmetic, etc."
@@ -6,5 +7,4 @@
 inherit autotools texinfo
 
 EXTRA_OEMAKE += "'infodir=${infodir}'"
-LDFLAGS_prepend_libc-uclibc = " -lrt "
 SRC_URI = "${GNU_MIRROR}/m4/m4-${PV}.tar.gz"