Pull microblaze updates from Michal Simek:

 - convert license headers to SPDX

 - cleanup header handling and use asm-generic one

 - get rid of earlyprintk residues

 - define barriers and use it in the code

 - get rid of setup_irq() for timer

 - various small addons and fixes

* tag 'microblaze-v5.7-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Replace setup_irq() by request_irq()
  microblaze: Stop printing the virtual memory layout
  microblaze: Use asm generic cmpxchg.h for !SMP case
  microblaze: Define percpu sestion in linker file
  microblaze: Remove unused boot_cpuid variable
  microblaze: Add missing irqflags.h header
  microblaze: Add sync to tlb operations
  microblaze: Define microblaze barrier
  microblaze: Remove empty headers
  microblaze: Remove early printk setup
  microblaze: Remove architecture tlb.h and use generic one
  microblaze: Convert headers to SPDX license
  microblaze: Fix _reset() function
  microblaze: Kernel parameters should be parsed earlier