kernel: bump 5.4 to 5.4.59

Removed since added upstream:
  bcm27xx:
    950-0428-staging-vchiq_arm-Add-a-matching-unregister-call.patch
  lantiq:
    0800-spi-lantiq-ssc-Fix-warning-by-using-WQ_MEM_RECLAI.patch

Manually adjusted patches:
  layerscape:
    801-audio-0005-Revert-ASoC-fsl_sai-Add-support-for-SAI-new-version.patch

Build-tested: ath79/generic, ramips, lantiq/xrx200, lantiq/xway,
   mvebu/cortexa9, sunxi/a53
Run-tested: ipq806x (R7800), layerscape (LS1012A-FRDM, LS1046A-RDB)

Building on layerscape is only possible with workaround from PR #3179.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-By: John Audia <graysky@archlinux.us> [ipq806x]
Tested-by: Pawel Dembicki <paweldembicki@gmail.com> [layerscape]

target/linux/generic/hack-5.4/221-module_exports.patch

@@ -30,7 +30,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  /* Align . to a 8 byte boundary equals to maximum function alignment. */
  #define ALIGN_FUNCTION()  . = ALIGN(8)
  
-@@ -406,14 +416,14 @@
+@@ -407,14 +417,14 @@
  	/* Kernel symbol table: Normal symbols */			\
  	__ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {		\
  		__start___ksymtab = .;					\
@@ -47,7 +47,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  		__stop___ksymtab_gpl = .;				\
  	}								\
  									\
-@@ -475,7 +485,7 @@
+@@ -476,7 +486,7 @@
  									\
  	/* Kernel symbol table: strings */				\
          __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {	\
@@ -56,7 +56,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  	}								\
  									\
  	/* __*init sections */						\
-@@ -884,6 +894,8 @@
+@@ -885,6 +895,8 @@
  	EXIT_TEXT							\
  	EXIT_DATA							\
  	EXIT_CALL							\