AMD hudson and yangtze boards: Let mainboard declare power button

The power button was declared by hudson's ASL as \_SB.PCI0.PWRB, and
always had the wake source declared as GPE3. This is not the correct
wake source for all boards. On some laptops declaring a wake source is
not needed, as the wake mechanism is handled by the EC.

Move the declaration of the power button to mainboard ASL files, and
scope it as \_SB.PWRB . This also makes the naming consistent with the
examples in the ACPI spec. The wake source for the PWRB of HP Pavilion
M6 1035dx is removed, as it is incorrect.

Change-Id: I9c76566025e7f200c0376673f6c6ea299afa4a5d
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5546
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>
hp/pavilion_m6_1035dx: Map USB and PWRB PME sources to GPE 11

Hudson ASL files assume the USB power event notifications are mapped
to GPE 0xb. Since that GPE is not used on this board, map these events
to GPE11. This GPE is already handled in ACPI via Method(_L0B). We
adjust this method to also notify the XHCI controller at PCI 10:0.

Change-Id: If33dd4bb5830820227f7c8b34594886cfae37282
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5554
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@gmail.com>
hp/pavilion_m6_1035dx: Map PCIE PME sources to GPE 0x18

The PCIE PME pin from the APU is connected to GEVENT8, but the
northbridge's ASL hardcodes this to GPE 0x18. Adjust the SCI map
accordingly.

Change-Id: Ie395e62919f6e97ef9bcc45c736f9debf4e09ba0
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5556
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@gmail.com>
southbridge/hudson: Initialize ACPI IO ports separate of FADT

The ACPI IO ports, and the respective SMI (for HAVE_SMI_HANDLER), were
initialized when the FADT table was written. This works well on a cold
boot, but the ACPI ports are not initialized on S3 resume, as ACPI
tables are not written. This will not work on S3 resume if the default
ports are not what we set them, or if AGESA sets them to some other
value.

To solve this, move the port configuration to southbridge chip init.

Change-Id: Ib4043f0fa5e20f08d320acd12ce84d4d789cd035
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5559
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@gmail.com>