kernel: Update kernel 4.19 to version 4.19.131

Fixes:
- CVE-2020-10757

The "mtd: rawnand: Pass a nand_chip object to nand_release()" commit was
backported which needed some adaptations to other code.

Run tested: ath79
Build tested: ath79

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

target/linux/generic/hack-4.19/207-disable-modorder.patch

@@ -15,7 +15,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 
 --- a/Makefile
 +++ b/Makefile
-@@ -1232,7 +1232,6 @@ all: modules
+@@ -1240,7 +1240,6 @@ endif
  
  PHONY += modules
  modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
@@ -23,7 +23,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	@$(kecho) '  Building modules, stage 2.';
  	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
  
-@@ -1261,7 +1260,6 @@ _modinst_:
+@@ -1269,7 +1268,6 @@ _modinst_:
  		rm -f $(MODLIB)/build ; \
  		ln -s $(CURDIR) $(MODLIB)/build ; \
  	fi