ARM: dts: aspeed: everest, rainier: Add power-ffs-sync-history GPIO

The IBM Everest and Rainier systems have a GPIO line that goes to the
power supplies. It has a dual function: 1) Fans Full Speed, and 2) Sync
input history.
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Link: https://lore.kernel.org/r/20220421213638.1151193-1-bjwyman@gmail.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-ibm-everest.dts

@@ -283,7 +283,7 @@ &gpio0 {
 	/*P0-P7*/	"","","","","led-pcieslot-power","","","",
 	/*Q0-Q7*/	"","","regulator-standby-faulted","","","","","",
 	/*R0-R7*/	"bmc-tpm-reset","power-chassis-control","power-chassis-good","","","I2C_FLASH_MICRO_N","","",
-	/*S0-S7*/	"","","","","","","","",
+	/*S0-S7*/	"","","","","power-ffs-sync-history","","","",
 	/*T0-T7*/	"","","","","","","","",
 	/*U0-U7*/	"","","","","","","","",
 	/*V0-V7*/	"","BMC_3RESTART_ATTEMPT_P","","","","","","",

arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts

@@ -265,7 +265,7 @@ &gpio0 {
 	/*Q0-Q7*/	"cfam-reset","","regulator-standby-faulted","","","","","",
 	/*R0-R7*/	"bmc-tpm-reset","power-chassis-control","power-chassis-good","","","","","",
 	/*S0-S7*/	"presence-ps0","presence-ps1","presence-ps2","presence-ps3",
-				"","","","",
+	"power-ffs-sync-history","","","",
 	/*T0-T7*/	"","","","","","","","",
 	/*U0-U7*/	"","","","","","","","",
 	/*V0-V7*/	"","","","","","","","",