package/qemu: fix indentation for host-qemu sub-options in menuconfig

Commit 255acdc14365 (package/qemu: needs gcc >= 8) added a comment that
explains that host-qemu would not be available for gcc < 4.8.

However, it interspersed that comment between the main symbol and the
conditional block with the sub-options. This breaks the indentation of
the sub-options in menuconfig, where they appear at the same level as
the main symbol, rather than indented below it.

Fix that by moving the comment before the main symbol.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 037226b33b42fb22234694fe1fcb0b6db624161f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/qemu/Config.in.host

@@ -34,6 +34,11 @@ config BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
 	bool
 	default y if BR2_PACKAGE_HOST_QEMU_ARCH_SUPPORTS
 
+comment "host-qemu needs a host gcc >= 8"
+	depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || \
+		BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORT
+	depends on !BR2_HOST_GCC_AT_LEAST_8
+
 config BR2_PACKAGE_HOST_QEMU
 	bool "host qemu"
 	depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORTS
@@ -50,11 +55,6 @@ config BR2_PACKAGE_HOST_QEMU
 
 	  http://www.qemu.org
 
-comment "host-qemu needs a host gcc >= 8"
-	depends on BR2_PACKAGE_HOST_QEMU_SYSTEM_ARCH_SUPPORTS || \
-		BR2_PACKAGE_HOST_QEMU_USER_ARCH_SUPPORT
-	depends on !BR2_HOST_GCC_AT_LEAST_8
-
 if BR2_PACKAGE_HOST_QEMU
 
 comment "Emulators selection"