Reenable qemu-mips port.

	Reenable qemu-mips port.

	* configure.ac: Handle --target=qemu-mips and --target=qemu_mips.
	Fix small arc bug while on it.
	* gentpl.py: Handle qemu_mips.
	* grub-core/Makefile.am: Likewise.
	* grub-core/Makefile.core.def: Likewise.
	* grub-core/disk/ata.c [GRUB_MACHINE_MIPS_QEMU_MIPS]: Remove
	inappropriate includes.
	(grub_ata_pciinit) [GRUB_MACHINE_MIPS_QEMU_MIPS]: Removed.
	(grub_ata_initialize): [GRUB_MACHINE_MIPS_QEMU_MIPS]: Rewritten.
	* grub-core/kern/main.c (grub_modules_get_end)
	[GRUB_MACHINE_MIPS_QEMU_MIPS]: Enable.
	* grub-core/kern/mips/qemu-mips: Moved to ..
	* grub-core/kern/mips/qemu_mips: ... this.
	* grub-core/kern/mips/qemu_mips/init.c (grub_get_rtc): Removed.
	(grub_machine_init): Call terminfo_init and serial_init.
	* grub-core/kern/mips/startup.S: Change MIPS_LOONGSON to MACHINE.
	* grub-core/loader/mips/linux.c (params) [GRUB_MACHINE_MIPS_QEMU_MIPS]:
	New variable.
	(grub_linux_boot) [GRUB_MACHINE_MIPS_QEMU_MIPS]: Handle the qemu-mips
	parameter passing.
	(grub_linux_unload) [GRUB_MACHINE_MIPS_QEMU_MIPS]: Free params.
	(grub_cmd_linux) [GRUB_MACHINE_MIPS_QEMU_MIPS]: Handle params.
	(grub_cmd_initrd) [GRUB_MACHINE_MIPS_QEMU_MIPS]: Likewise.
	* include/grub/mips/qemu_mips/cmos.h: New file.
	* include/grub/mips/qemu-mips/kernel.h: Don't include cpu/kernel.h.
	* include/grub/mips/qemu-mips/memory.h (grub_machine_mmap_iterate):
	Removed.
	* include/grub/mips/qemu-mips/serial.h (GRUB_MACHINE_SERIAL_PORTS):
	Use correct mips-style address.
	* include/grub/mips/qemu-mips/time.h: Include cpu/time.h.
	(GRUB_TICKS_PER_SECOND): Removed.
	(grub_get_rtc): Likewise.
	(grub_cpu_idle): Likewise.
	* include/grub/offsets.h (GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ADDR):
	New definition.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_LINK_ALIGN): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_COMPRESSED_SIZE): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_UNCOMPRESSED_SIZE): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_TOTAL_MODULE_SIZE): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_MOD_ALIGN): Likewise.
	* util/grub-mkimage.c (image_targets): Add mipsel-qemu_mips-elf.