package/postgis: fix comment dependencies (binutils-bug-21464, binutils-bug-27597)

The comment dependencies need to be the inverse of the package
dependencies (fixes comment shown in menuconfig even if the package
is available).

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/postgis/Config.in

@@ -24,5 +24,5 @@ comment "postgis needs a toolchain w/ C++, threads, wchar, gcc >= 4.7, not binut
 	depends on !BR2_microblazeel && !BR2_microblazebe # ICE
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 || \
 		!BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR || \
-		!BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 || \
-		!BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597
+		BR2_TOOLCHAIN_HAS_BINUTILS_BUG_21464 || \
+		BR2_TOOLCHAIN_HAS_BINUTILS_BUG_27597