disas/nanomips: Rename nanomips.cpp to nanomips.c

Now that everything has been converted to C code the nanomips.cpp file
has been renamed. Therefore, meson.build file is also changed.

Signed-off-by: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220912122635.74032-25-milica.lazarevic@syrmia.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

disas/meson.build

@@ -5,7 +5,7 @@ common_ss.add(when: 'CONFIG_HPPA_DIS', if_true: files('hppa.c'))
 common_ss.add(when: 'CONFIG_M68K_DIS', if_true: files('m68k.c'))
 common_ss.add(when: 'CONFIG_MICROBLAZE_DIS', if_true: files('microblaze.c'))
 common_ss.add(when: 'CONFIG_MIPS_DIS', if_true: files('mips.c'))
-common_ss.add(when: 'CONFIG_NANOMIPS_DIS', if_true: files('nanomips.cpp'))
+common_ss.add(when: 'CONFIG_NANOMIPS_DIS', if_true: files('nanomips.c'))
 common_ss.add(when: 'CONFIG_NIOS2_DIS', if_true: files('nios2.c'))
 common_ss.add(when: 'CONFIG_RISCV_DIS', if_true: files('riscv.c'))
 common_ss.add(when: 'CONFIG_SH4_DIS', if_true: files('sh4.c'))