Add Dell Latitude 5490

dell/latitude/5490/README.md

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+# Dell Latitude 5490
+
+CPU: Intel(R) Core(TM) i5-8350U @ 1.70GHz
+GPU: Intel UHD Graphics 620
+
+Ports:
+- HDMI, VGA
+- 1 x USB-C
+- MicroSD-card reader
+- Combo Audio jack
+- 3 x USB-A
+- SIM-card slot
+
+
+```shellsession
+$ lspci -nn
+00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5914] (rev 08)
+00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07)
+00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 08)
+00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)
+00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
+00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 [8086:9d60] (rev 21)
+00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 [8086:9d61] (rev 21)
+00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a] (rev 21)
+00:17.0 RAID bus controller [0104]: Intel Corporation 82801 Mobile SATA Controller [RAID mode] [8086:282a] (rev 21)
+00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 [8086:9d10] (rev f1)
+00:1c.2 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #3 [8086:9d12] (rev f1)
+00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point LPC/eSPI Controller [8086:9d4e] (rev 21)
+00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
+00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)
+00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
+00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (4) I219-LM [8086:15d7] (rev 21)
+01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
+02:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
+```

dell/latitude/5490/default.nix

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+{ lib, ... }:
+
+{
+  imports = [
+    ../../../common/cpu/intel
+    ../../../common/pc/laptop
+    ../../../common/pc/laptop/ssd
+  ];
+
+  # Important Firmware
+  hardware.enableRedistributableFirmware = lib.mkDefault true;
+  
+  boot = {
+    # Kernel Panic on suspend fix, taken from ArchLinux wiki.
+    kernelParams = "acpi_enforce_resources=lax i915.enable_dc=0";
+    # Audio Mute LED
+    extraModprobeConfig = ''
+       options snd-hda-intel model=mute-led-gpio
+    '';
+  };
+}