MIPS: add default CPU ISAs

Meant to be used by the target architecture variants.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

arch/Config.in.mips

@@ -1,3 +1,17 @@
+# mips default CPU ISAs
+config BR2_MIPS_CPU_MIPS32
+	bool
+config BR2_MIPS_CPU_MIPS32R2
+	bool
+config BR2_MIPS_CPU_MIPS32R6
+	bool
+config BR2_MIPS_CPU_MIPS64
+	bool
+config BR2_MIPS_CPU_MIPS64R2
+	bool
+config BR2_MIPS_CPU_MIPS64R6
+	bool
+
 choice
 	prompt "Target Architecture Variant"
 	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el