sh: SHmedia ISA tuning fixups.

SH-5 doesn't support any elaborate ISA inheritance schemes (-dsp, -up,
etc.), so only bother with that if we are building an sh32 kernel.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Makefile

@@ -18,7 +18,11 @@ isa-$(CONFIG_CPU_SH4)			:= sh4
 isa-$(CONFIG_CPU_SH4A)			:= sh4a
 isa-$(CONFIG_CPU_SH4AL_DSP)		:= sh4al
 isa-$(CONFIG_CPU_SH5)			:= shmedia
+
+ifeq ($(CONFIG_SUPERH32),y)
 isa-$(CONFIG_SH_DSP)			:= $(isa-y)-dsp
+isa-y					:= $(isa-y)-up
+endif
 
 cflags-$(CONFIG_CPU_SH2)		:= $(call cc-option,-m2,)
 cflags-$(CONFIG_CPU_SH2A)		+= $(call cc-option,-m2a,) \