configs/qemu: enable modules for x86 and x86_64

It's useful for demo configs which have more features, like
automatically loaded (module) drivers.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

board/qemu/x86/linux-4.5.config

@@ -1,4 +1,6 @@
 CONFIG_SYSVIPC=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
 CONFIG_SMP=y
 CONFIG_NET=y
 CONFIG_PACKET=y

board/qemu/x86_64/linux-4.5.config

@@ -1,4 +1,6 @@
 CONFIG_SYSVIPC=y
+CONFIG_MODULES=y
+CONFIG_MODULE_UNLOAD=y
 CONFIG_SMP=y
 CONFIG_NET=y
 CONFIG_PACKET=y