hw: move char devices to hw/char/, configure via default-configs/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/default-configs/sparc-softmmu.mak b/default-configs/sparc-softmmu.mak
index 25bcbe3..da5b02d 100644
--- a/default-configs/sparc-softmmu.mak
+++ b/default-configs/sparc-softmmu.mak
@@ -11,3 +11,4 @@
 CONFIG_LANCE=y
 CONFIG_TCX=y
 CONFIG_CS4231=y
+CONFIG_GRLIB=y