hw: Add lost ARM core again

Commit 0434e30a accidentally removed
the compilation of arm11mpcore.c.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

default-configs/arm-softmmu.mak

@@ -34,8 +34,8 @@ CONFIG_PFLASH_CFI02=y
 CONFIG_MICRODRIVE=y
 CONFIG_USB_MUSB=y
 
-CONFIG_ARM5MPCORE=y
 CONFIG_ARM9MPCORE=y
+CONFIG_ARM11MPCORE=y
 CONFIG_ARM15MPCORE=y
 
 CONFIG_ARM_GIC=y