MIPS: Don't build MSA support unless it can be used

MSA requires that Status.FR == 1, so for MIPS32 tasks MSA can only be
used if CONFIG_MIPS_O32_FP64_SUPPORT is enabled. If it is not & the
kernel is 32bit, there's no point including support for MSA.
Signed-off-by: NPaul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7310/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

@@ -2117,6 +2117,7 @@ config CPU_MICROMIPS
 config CPU_HAS_MSA
 	bool "Support for the MIPS SIMD Architecture"
 	depends on CPU_SUPPORTS_MSA
+	depends on 64BIT || MIPS_O32_FP64_SUPPORT
 	default y
 	help
 	  MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers