mxs: switch to kernel 5.4

Compiled for and run-tested on
 - I2SE Duckbill board
 - Olimex OLinuXino Maxi board

Signed-off-by: Michael Heimpold <[email protected]>

target/linux/mxs/Makefile

@@ -13,7 +13,7 @@ FEATURES:=ext4 rtc usb gpio
 CPU_TYPE:=arm926ej-s
 
 MAINTAINER:=Zoltan HERPAI <[email protected]>
-KERNEL_PATCHVER:=4.19
+KERNEL_PATCHVER:=5.4
 KERNELNAME:=zImage dtbs
 
 define Target/Description