hw/mips: Rename malta/mipssim/r4k/jazz files

Machine file names should not have prefix "mips_".

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Message-id: <20200518200920.17344-22-aleksandar.qemu.devel@gmail.com>
[PMD: Fixed Fuloong line conflict due to rebase]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

hw/mips/Makefile.objs

@@ -1,8 +1,8 @@
 obj-y += addr.o mips_int.o
-obj-$(CONFIG_R4K) += mips_r4k.o
-obj-$(CONFIG_MALTA) += gt64xxx_pci.o mips_malta.o
-obj-$(CONFIG_MIPSSIM) += mips_mipssim.o
-obj-$(CONFIG_JAZZ) += mips_jazz.o
+obj-$(CONFIG_R4K) += r4k.o
+obj-$(CONFIG_MALTA) += gt64xxx_pci.o malta.o
+obj-$(CONFIG_MIPSSIM) += mipssim.o
+obj-$(CONFIG_JAZZ) += jazz.o
 obj-$(CONFIG_FULOONG) += fuloong2e.o
 obj-$(CONFIG_MIPS_CPS) += cps.o
 obj-$(CONFIG_MIPS_BOSTON) += boston.o