Make PCI available on all i386 architectures.

        * include/grub/i386/pc/pci.h: Move from here ...
        * include/grub/i386/pci.h: ... to here.

        * include/grub/i386/pc/pci.h: Remove.
        * include/grub/i386/efi/pci.h: Remove.
        * include/grub/x86_64/efi/pci.h: Remove.

        * include/grub/pci.h: Replace `<grub/machine/pci.h>' with
        `<grub/cpu/pci.h>'.

        * conf/i386-coreboot.rmk (pkglib_MODULES): Add `pci' and `lspci'.
        (pci_mod_SOURCES, pci_mod_CFLAGS, pci_mod_LDFLAGS, lspci_mod_SOURCES)
        (lspci_mod_CFLAGS, lspci_mod_LDFLAGS): New variables.

        * conf/i386-ieee1275.rmk: Likewise.

	* bus/pci.c: New file.

	* include/grub/pci.h: Likewise.

	* include/grub/i386/pc/pci.h: Likewise.

	* commands/lspci.c: Likewise.

	* conf/i386-pc.rmk (pkglib_MODULES): Add `pci.mod' and
	`lspci.mod'.
	(pci_mod_SOURCES): New variable.
	(pci_mod_CFLAGS): Likewise.
	(pci_mod_LDFLAGS): Likewise.
	(lspci_mod_SOURCES): Likewise.
	(lspci_mod_CFLAGS): Likewise.
	(lspci_mod_LDFLAGS): Likewise.

        * conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Add
        `term/i386/pc/at_keyboard.c'.
        (pkglib_MODULES): Add `serial.mod'.
        (serial_mod_SOURCES): New variable.
        (serial_mod_CFLAGS): Likewise.
        (serial_mod_LDFLAGS): Likewise.

        * include/grub/i386/ieee1275/console.h: Add `<grub/symbol.h>'.  Remove
        `<grub/powerpc/ieee1275/console.h>'.
        (grub_keyboard_controller_init): New function prototype.
        (grub_console_checkkey): Likewise.
        (grub_console_getkey): Likewise.

        * kern/powerpc/ieee1275/init.c (grub_machine_init): Initialize AT
        keyboard on i386.

        * term/ieee1275/ofconsole.c (grub_ofconsole_term): On i386, use
        grub_ofconsole_checkkey() and grub_ofconsole_getkey() for input.