mb/google/kahlee: Fix IRQ routing

ACPI interrupt routing file routing.asl is not reflecting AGESA settings to
the NB Interrupt Routing Registers. The AGESA settings are:
Device  self    INTA    INTB    INTC    INTD
GPP 0	23	0	1	2	3
GPP 1	24	8	9	10	11
GPP 2	25	16	17	18	19
GPP 3	26	24	25	26	27
GPP 4	23	3	0	1	2
HDA	none	22	23	20	21
GBIF	none	6	7	4	5

Fix the routing table, considering that NB IOAPIC starts at interrupt 24.

BUG=b:74104946
TEST=Build and boot to a modified grunt board to enable the emmc. Then used
"cat /proc/interrupts" to get active interrupts. Also checked IOAPIC
redirection registers, which are now being programmed.

Change-Id: I60847c46f3f938f9e97d7b323b27d20e36aa2d02
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/25510
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed