MIPS: add support for M6201 cores

-march=m6201 is not yet supported in GCC upstream, so disabling all
versions when selecting this core.

Note that M6201 implies a MIPS R6 CPU, and some GCC versions are already
disabled for R6, so we don't need to disable those ones for M6201 as
well.

The external Codescape IMG GNU Linux Toolchain has support for this
core.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

arch/Config.in.mips

@@ -55,6 +55,10 @@ config BR2_mips_m5101
 	bool "M5101"
 	depends on !BR2_ARCH_IS_64
 	select BR2_MIPS_CPU_MIPS32R5
+config BR2_mips_m6201
+	bool "M6201"
+	depends on !BR2_ARCH_IS_64
+	select BR2_MIPS_CPU_MIPS32R6
 config BR2_mips_p5600
 	bool "P5600"
 	depends on !BR2_ARCH_IS_64
@@ -131,6 +135,7 @@ config BR2_GCC_TARGET_ARCH
 	default "interaptiv"	if BR2_mips_interaptiv
 	default "m5100"		if BR2_mips_m5100
 	default "m5101"		if BR2_mips_m5101
+	default "m6201"		if BR2_mips_m6201
 	default "p5600"		if BR2_mips_p5600
 	default "mips64"	if BR2_mips_64
 	default "mips64r2"	if BR2_mips_64r2

package/gcc/Config.in.host

@@ -63,7 +63,8 @@ choice
 		depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_powerpc64 || BR2_powerpc64el))
 		# Unsupported MIPS cores
 		depends on !BR2_mips_interaptiv && !BR2_mips_m5100 && \
-			!BR2_mips_m5101 && !BR2_mips_i6400 && !BR2_mips_p6600
+			!BR2_mips_m5101 && !BR2_mips_m6201 && !BR2_mips_i6400 && \
+			!BR2_mips_p6600
 		# musl mips64 unsupported
 		depends on !(BR2_TOOLCHAIN_USES_MUSL && (BR2_mips64 || BR2_mips64el))
 		select BR2_TOOLCHAIN_GCC_AT_LEAST_5
@@ -73,7 +74,7 @@ choice
 		# Broken or unsupported architectures
 		depends on !BR2_arc
 		# Unsupported MIPS cores
-		depends on !BR2_mips_p6600
+		depends on !BR2_mips_m6201 && !BR2_mips_p6600
 		select BR2_TOOLCHAIN_GCC_AT_LEAST_6
 
 endchoice