Similar to how r171350 fixed linking of kernel modules containing

firmware objects by adding --no-warn-mismatch to the linker flags,
add --no-warn-mismatch when linking firmware objects (*.fwo) as
well as to the link of the main kernel file.  This permits firmware
modules to be statically linked into an ia64 kernel.

sys/conf/kern.pre.mk

@@ -132,7 +132,8 @@ NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk ${.IMPSRC} -c ; \
 	  ${CC} -c ${CFLAGS} ${WERROR} ${PROF} ${.PREFIX}.c
 
 NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
-NORMAL_FWO= ${LD} -b binary -d -warn-common -r -d -o ${.TARGET} ${.ALLSRC:M*.fw}
+NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
+	-o ${.TARGET} ${.ALLSRC:M*.fw}
 
 # Special flags for managing the compat compiles for ZFS
 ZFS_CFLAGS=	-DFREEBSD_NAMECACHE -DBUILDING_ZFS -nostdinc -I$S/cddl/compat/opensolaris -I$S/cddl/contrib/opensolaris/uts/common/fs/zfs -I$S/cddl/contrib/opensolaris/uts/common/zmod -I$S/cddl/contrib/opensolaris/uts/common -I$S -I$S/cddl/contrib/opensolaris/common/zfs -I$S/cddl/contrib/opensolaris/common ${CFLAGS} -Wno-unknown-pragmas -Wno-missing-prototypes -Wno-undef -Wno-strict-prototypes -Wno-cast-qual -Wno-parentheses -Wno-redundant-decls -Wno-missing-braces -Wno-uninitialized -Wno-unused -Wno-inline -Wno-switch -Wno-pointer-arith -Wno-unknown-pragmas
@@ -164,7 +165,7 @@ SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 SYSTEM_OBJS= locore.o ${MDOBJS} ${OBJS}
 SYSTEM_OBJS+= ${SYSTEM_CFILES:.c=.o}
 SYSTEM_OBJS+= hack.So
-SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} \
+SYSTEM_LD= @${LD} -Bdynamic -T ${LDSCRIPT} --no-warn-mismatch \
 	-warn-common -export-dynamic -dynamic-linker /red/herring \
 	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o
 SYSTEM_LD_TAIL= @${OBJCOPY} --strip-symbol gcc2_compiled. ${.TARGET} ; \