meson: Drop host_arch rename for mips64

This requires renaming several directories:
tcg/mips, linux-user/include/host/mips, and
common-user/host/mips.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

MAINTAINERS

@@ -4074,7 +4074,7 @@ R: Huacai Chen <chenhuacai@kernel.org>
 R: Jiaxun Yang <jiaxun.yang@flygoat.com>
 R: Aleksandar Rikalo <arikalo@gmail.com>
 S: Odd Fixes
-F: tcg/mips/
+F: tcg/mips64/
 
 PPC TCG target
 M: Richard Henderson <richard.henderson@linaro.org>

configure

@@ -400,10 +400,8 @@ elif check_define _ARCH_PPC64 ; then
   else
     cpu="ppc64"
   fi
-elif check_define __mips__ ; then
-  if check_define __mips64 ; then
-    cpu="mips64"
-  fi
+elif check_define __mips64 ; then
+  cpu="mips64"
 elif check_define __s390__ ; then
   if check_define __s390x__ ; then
     cpu="s390x"
@@ -455,7 +453,7 @@ case "$cpu" in
 
   mips64*|mipsisa64*)
     cpu=mips64
-    host_arch=mips
+    host_arch=mips64
     linux_arch=mips
     ;;
 

meson.build

@@ -265,8 +265,6 @@ enable_modules = get_option('modules') \
 
 if cpu not in supported_cpus
   host_arch = 'unknown'
-elif cpu == 'mips64'
-  host_arch = 'mips'
 elif cpu in ['riscv32', 'riscv64']
   host_arch = 'riscv'
 else