Linux kernel oops on Malta board while accessing pflash

This bug has been copied automatically from: https://bugs.launchpad.net/qemu/+bug/1833661

commit 33d609990621dea6c7d056c86f707b8811320ac1

While running tests/acceptance/linux_ssh_mips_malta.py, the big-endian
tests fail:

  physmap-flash.0: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer
ID 0x000000 Chip ID 0x000000
  Intel/Sharp Extended Query Table at 0x0031
  Using buffer write method
  Searching for RedBoot partition table in physmap-flash.0 at offset
0x1003f0000
  Creating 3 MTD partitions on "physmap-flash.0":
  0x000000000000-0x000000100000 : "YAMON"
  0x000000100000-0x0000003e0000 : "User FS"
  0x0000003e0000-0x000000400000 : "Board Config"
  CPU 0 Unable to handle kernel paging request at virtual address 00000014

The 64-bit test fails with:

  CPU 0 Unable to handle kernel paging request at virtual address
0000000000000028