arm64: dts: qcom: Add HP EliteBook X G2q 14 AI

Add board support for the HP EliteBook X G2q 14" Next Gen AI PC
(product SKU C4JG0AV, board 8E91), a Snapdragon X2 Elite (Glymur)
laptop, using the "hp,elitebook-x-g2q" / "qcom,glymur" compatible.

Enabled by this device tree:

  - internal eDP panel (samsung,atna33xc20)
  - 2x USB Type-C with DisplayPort alt-mode and USB
  - chassis HDMI output
  - chassis USB-A host port (usb_mp multiport controller)
  - internal eUSB2 host with the Elan fingerprint reader
  - NVMe SSD on PCIe5
  - Wi-Fi and Bluetooth
  - HID-over-I2C keyboard, touchpad, touchscreen; lid switch
  - Adreno GPU and GMU (Freedreno GL on Mesa)
  - audio playback and capture
  - real-time clock
  - compute DSP (cDSP)

The HDMI jack is driven by a power-only DisplayPort-to-HDMI LSPCON on
the usb_2 combo-PHY DP lanes rather than being a third USB-C port; HPD
is on gpio126. The LSPCON is on an I/O sub-board with no I2C/AUX control
path, so it is modelled with the generic simple-bridge "parade,ps185hdm"
compatible used by the in-tree x1e80100 HDMI-bridge boards (the exact
bridge part is unconfirmed) and it needs CONFIG_DRM_SIMPLE_BRIDGE.

The &gpu/&gmu enable, the audio nodes and &remoteproc_soccp opt into
glymur.dtsi SoC nodes that are still in-flight; those series are
declared as prerequisites in the cover letter.

Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Jason Pettit <jason.pettit@oss.qualcomm.com>
Link: https://patch.msgid.link/20260625-glymur-send-v2-2-00905324ffbf@oss.qualcomm.com
Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>

arch/arm64/boot/dts/qcom/Makefile

@@ -16,6 +16,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= apq8096sg-db820c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-ifc6640.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= eliza-mtp.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= glymur-crd.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= glymur-hp-elitebook-x-g2q.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= glymur-lenovo-yoga-slim7x.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= hamoa-iot-evk.dtb