MIPS: Hardwire detection of DSP ASE Rev 2 for systems, as required.

Most supported systems currently hardwire cpu_has_dsp to 0, so we also
can disable support for cpu_has_dsp2 resulting in a slightly smaller
kernel.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h b/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h
index 675bd86..1a05d85 100644
--- a/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-loongson/cpu-feature-overrides.h
@@ -32,6 +32,7 @@
 #define cpu_has_dc_aliases	(PAGE_SIZE < 0x4000)
 #define cpu_has_divec		0
 #define cpu_has_dsp		0
+#define cpu_has_dsp2		0
 #define cpu_has_ejtag		0
 #define cpu_has_fpu		1
 #define cpu_has_ic_fills_f_dc	0