sh4-softmmu.mak: express dependencies with Kconfig

%-softmmu.mak only keep boards and optional device
definitions in Kconfig mode.

Note that USB_OHCI was missing (it was brought in via pci.mak,
but r2d needs the sysbus version) and SERIAL is not used.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 files changed