package/gcc: select BR2_TOOLCHAIN_HAS_FORTRAN when appropriate

This is only for the Buildroot toolchain backend.

Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/gcc/Config.in.host

@@ -127,6 +127,7 @@ config BR2_TOOLCHAIN_BUILDROOT_FORTRAN
 	# on architecture building libquadmath, wchar is required
 	depends on !BR2_TOOLCHAIN_HAS_LIBQUADMATH || \
 		(BR2_TOOLCHAIN_HAS_LIBQUADMATH && BR2_USE_WCHAR)
+	select BR2_TOOLCHAIN_HAS_FORTRAN
 	help
 	  Enable this option if you want your toolchain to support the
 	  Fortran language and you want Fortran libraries to be