Trogdor: memory overlap in dts

[r-c-n]

Warning seen in some kernelci jobs:

• https://lava.collabora.co.uk/scheduler/job/5570871#L868
• https://lava.collabora.co.uk/scheduler/job/5570876#L908

Kernel versions: v5.17-rc2 and v5.17-rc3

  [    0.000000] OF: reserved mem: OVERLAP DETECTED!
  [    0.000000] memory@86000000 (0x0000000086000000--0x000000008ec00000) overlaps with memory@8b700000 (0x000000008b700000--0x000000008b710000)
  [    0.000000] earlycon: qcom_geni0 at MMIO 0x0000000000a88000 (options '115200n8')
  [    0.000000] ------------[ cut here ]------------
  [    0.000000] console 'qcom_geni0' already registered
  [    0.000000] WARNING: CPU: 0 PID: 0 at kernel/printk/printk.c:2953 register_console+0x58/0x2a4
  [    0.000000] Modules linked in:
  [    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.17.0-rc2 #1
  [    0.000000] Hardware name: Google Lazor Limozeen without Touchscreen (rev5 - rev8) (DT)

Preliminary investigation:

sc7180-trogdor.dtsi (included: sc7180-trogdor-lazo-limozeen-nots-r5.dts -> sc7180-trogdor-lazor.dtsi) defines a memory region mpss_mem:

	reserved-memory {
		...

		mpss_mem: memory@86000000 {
			reg = <0x0 0x86000000 0x0 0x2000000>;
			no-map;
		};

that goes from 0x86000000 to 0x88000000. This is later overriden in sc7180-trogdor-lte-sku.dtsi:

&mpss_mem {
	reg = <0x0 0x86000000 0x0 0x8c00000>;
};

and now that region (0x86000000 - 0x8ec00000) overlaps the ipa_fw_mem reserved memory region defined in sc7180.dtsi.

[padovan]

Old issue. (also we are not tracking kernel test failure/issues through GitHub anymore)