kernel: bump 4.9 to 4.9.169

Refreshed all patches.

New symbols:
- CONFIG_PPC_BARRIER_NOSPEC
- CONFIG_LDISC_AUTOLOAD

Compile-tested on: ar71xx
Runtime-tested on: ar71xx

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

target/linux/generic/backport-4.9/090-net-generalize-napi_complete_done.patch

@@ -399,7 +399,7 @@ Signed-off-by: David S. Miller <davem@davemloft.net>
  			/* bnx2x_has_rx_work() reads the status block,
 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
 +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
-@@ -1787,7 +1787,7 @@ static int bnxt_poll_nitroa0(struct napi
+@@ -1797,7 +1797,7 @@ static int bnxt_poll_nitroa0(struct napi
  	}
  
  	if (!bnxt_has_work(bp, cpr) && rx_pkts < budget) {

target/linux/generic/config-4.9

@@ -2134,6 +2134,7 @@ CONFIG_LBDAF=y
 # CONFIG_LCD_S6E63M0 is not set
 # CONFIG_LCD_TDO24M is not set
 # CONFIG_LCD_VGG2432A4 is not set
+CONFIG_LDISC_AUTOLOAD=y
 # CONFIG_LDM_PARTITION is not set
 CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y
 # CONFIG_LEDS_BCM6328 is not set
@@ -3325,6 +3326,7 @@ CONFIG_PINMUX=y
 # CONFIG_PPC_256K_PAGES is not set
 CONFIG_PPC_4K_PAGES=y
 # CONFIG_PPC_64K_PAGES is not set
+CONFIG_PPC_BARRIER_NOSPEC=y
 # CONFIG_PPC_DISABLE_WERROR is not set
 # CONFIG_PPC_EMULATED_STATS is not set
 # CONFIG_PPC_EPAPR_HV_BYTECHAN is not set