treewide: Use 'fadt->pm_tmr_len' for 'x_pm_tmr_blk.bit_width'

Change-Id: Id4e2939b74ec93f50a4bedd0069090f0775b0556
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68271
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/southbridge/amd/cimx/sb800/fadt.c b/src/southbridge/amd/cimx/sb800/fadt.c
index c7c44ea..88c488c 100644
--- a/src/southbridge/amd/cimx/sb800/fadt.c
+++ b/src/southbridge/amd/cimx/sb800/fadt.c
@@ -110,7 +110,7 @@
 	fadt->x_pm2_cnt_blk.addrh = 0x0;
 
 	fadt->x_pm_tmr_blk.space_id = ACPI_ADDRESS_SPACE_IO;
-	fadt->x_pm_tmr_blk.bit_width = 32;
+	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	fadt->x_pm_tmr_blk.bit_offset = 0;
 	fadt->x_pm_tmr_blk.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS;
 	fadt->x_pm_tmr_blk.addrl = PM1_TMR_BLK_ADDRESS;