apmd: fix build with static libraries disabled

apmd was using foo.o in Makefile dependencies but if libtool is being used then
those are the statically linked intermediate files.  When static libraries are
globally disabled they won't be generated by libtool-cross so the build fails.
Instead, use the libtool intermediate wrapper .lo files so the build succeeds.

(From OE-Core rev: a3dbd98970683c410edee5e15e5fe72643953adf)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-bsp/apmd/apmd/linkage.patch

@@ -0,0 +1,53 @@
+When building use the libtool intermediate .lo files instead of explicitly using
+the .o files. Under libtool foo.lo is the libtool intermediate wrapper, foo.o is
+a static build, and .libs/foo.o is a shared build.
+
+If static libraries have been disabled globally then libtool won't generate them
+and explicit references to foo.o won't be satisfied.
+
+Upstream-Status: Pending
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+diff --git a/Makefile b/Makefile
+index bb695c6..5f60146 100644
+--- a/Makefile
++++ b/Makefile
+@@ -28,7 +28,7 @@ endif
+ 
+ .SUFFIXES:
+ 
+-OBJS=apmlib.o
++OBJS=apmlib.lo
+ EXES=apm apmd xapm apmsleep
+ HEADERS=apm.h
+ 
+@@ -66,22 +66,22 @@ all: $(EXES)
+ 
+ $(OBJS): $(HEADERS)
+ 
+-%.o: %.c
++%.lo: %.c
+ 	$(LT_COMPILE) -c $(CPPFLAGS) $(CFLAGS) $(XTRACFLAGS) $<
+ 
+-%: %.o $(LIBAPM)
++%: %.lo $(LIBAPM)
+ 	$(LT_LINK) -o $@ $< $(LDFLAGS) $(LIBAPM)
+ 
+-xapm.o: xapm.c
++xapm.lo: xapm.c
+ 	$(LT_COMPILE) -c $(CPPFLAGS) $(CFLAGS) $(XTRACFLAGS) -DNARROWPROTO $<
+ 
+-apmd: apmd.o
++apmd: apmd.lo
+ 
+-apmsleep: apmsleep.o
++apmsleep: apmsleep.lo
+ 
+-apmexists: apmexists.o
++apmexists: apmexists.lo
+ 
+-xapm: xapm.o $(LIBAPM)
++xapm: xapm.lo $(LIBAPM)
+ 	$(LT_LINK) -o $@ $< $(LDFLAGS) $(LIBAPM) $(XLDFLAGS) $(XLIBS)
+ 
+ $(LIBAPM): apmlib.lo

meta/recipes-bsp/apmd/apmd_3.2.2-15.bb

@@ -14,6 +14,7 @@ SRC_URI = "${DEBIAN_MIRROR}/main/a/apmd/apmd_3.2.2.orig.tar.gz;name=tarball \
            file://libtool.patch \
            file://unlinux.patch \
            file://wexitcode.patch \
+           file://linkage.patch \
            file://init \
            file://default \
            file://apmd_proxy \