libgcc: Ensure that gcc configure options are passed to libgcc too

libgcc uses certain options from EXTRA_OECONF as well, curently we are
ignoring them, as a result we do not configure libgcc to match cross gcc
in some cases e.g. ppc/musl should have used 64bit long doubles but
it went for 128-ldbls which is default, works on glibc but not on musl

(From OE-Core rev: d774bb2d10f2c05900f87dcc53f073433ca02121)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/gcc/libgcc-common.inc

@@ -4,6 +4,13 @@ require gcc-shared-source.inc
 
 INHIBIT_DEFAULT_DEPS = "1"
 
+EXTRA_OECONF += "\
+    ${@get_gcc_mips_plt_setting(bb, d)} \
+    ${@get_gcc_ppc_plt_settings(bb, d)} \
+    ${@get_long_double_setting(bb, d)} \
+    ${@get_gcc_multiarch_setting(bb, d)} \
+"
+
 do_configure () {
 	target=`echo ${TARGET_SYS} | sed -e s#-${SDKPKGSUFFIX}##`
 	install -d ${D}${base_libdir} ${D}${libdir}