Revert "default-configs/ppc64: add all components of i82378 SuperIO chip used by prep"

This reverts commit 9c998424 as even when
it was applied, all supposedly new config options were already enabled.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAlexander Graf <agraf@suse.de>

default-configs/ppc64-softmmu.mak

@@ -51,11 +51,5 @@ CONFIG_LIBDECNUMBER=y
 CONFIG_XICS=$(CONFIG_PSERIES)
 CONFIG_XICS_KVM=$(and $(CONFIG_PSERIES),$(CONFIG_KVM))
 # For PReP
-CONFIG_I82378=y
-CONFIG_I8259=y
-CONFIG_I8254=y
-CONFIG_PCSPK=y
-CONFIG_I82374=y
-CONFIG_I8257=y
 CONFIG_MC146818RTC=y
 CONFIG_ISA_TESTDEV=y