treewide: Use 'fadt->pm1_evt_len' for 'x_pm1a_evt_blk.bit_width'

Change-Id: I1e51ccad32f1c5e692c76b331eedf4d3bb260d38
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68269
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/soc/amd/picasso/acpi.c

@@ -111,7 +111,7 @@ void acpi_fill_fadt(acpi_fadt_t *fadt)
 	fadt->x_firmware_ctl_h = 0;
 
 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
-	fadt->x_pm1a_evt_blk.bit_width = 32;
+	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
 	fadt->x_pm1a_evt_blk.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS;
 	fadt->x_pm1a_evt_blk.addrl = ACPI_PM_EVT_BLK;