board: rockchip: add Theobroma-Systems RK3588 Jaguar SBC

JAGUAR is a Single-Board Computer (SBC) based around the rk3588 SoC and
is targeting Autonomous Mobile Robots (AMR).

It features:
 * LPDDR4X (up to 16GB)
 * 1Gbps Ethernet on RJ45 connector (KSZ9031 or KSZ9131)
 * PCIe 3.0 4-lane on M.2 M-key connector
 * PCIe 2.1 1-lane on M.2 E-key
 * USB 2.0 on M.2 E-key
 * 2x USB3 OTG type-c ports with DP Alt-Mode
 * USB2 host port
 * HDMI output
 * 2x camera connectors, each exposing:
   * 2-lane MIPI-CSI
   * 1v2, 1v8, 2v8 power rails
   * I2C bus
   * GPIOs
 * PPS input
 * CAN
 * RS485 UART
 * FAN connector
 * SD card slot
 * eMMC (up to 256GB)
 * RTC backup battery
 * Companion microcontroller
   * ISL1208 RTC emulation
   * AMC6821 PWM emulation
   * On/off buzzer control
 * Secure Element
 * 80-pin Mezzanine connector for daughterboards:
   * GPIOs
   * 1Gbps Ethernet
   * PCIe 2.1 1-lane
   * 2x 2-lane MIPI-CSI
   * ADC channel
   * I2C bus
   * PWM
   * UART
   * SPI
   * SDIO
   * CAN
   * I2S
   * 1v8, 3v3, 5v0, dc-in (12-24V) power rails

The Device Tree comes from next-20240110 Linux kernel.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
diff --git a/board/theobroma-systems/jaguar_rk3588/MAINTAINERS b/board/theobroma-systems/jaguar_rk3588/MAINTAINERS
new file mode 100644
index 0000000..28fae4b
--- /dev/null
+++ b/board/theobroma-systems/jaguar_rk3588/MAINTAINERS
@@ -0,0 +1,13 @@
+JAGUAR-RK3588 (SBC-RK3588-AMR Single Board Computer)
+M:	Klaus Goger <klaus.goger@theobroma-systems.com>
+M:	Quentin Schulz <quentin.schulz@theobroma-systems.com>
+M:	Heiko Stuebner <heiko.stuebner@cherry.de>
+S:	Maintained
+F:	board/theobroma-systems/jaguar_rk3588
+F:	board/theobroma-systems/common
+F:	doc/board/theobroma-systems/
+F:	include/configs/jaguar_rk3588.h
+F:	arch/arm/dts/rk3588-jaguar*
+F:	configs/jaguar-rk3588_defconfig
+W:	https://theobroma-systems.com/product/jaguar-sbc-rk3588/
+T:	git git://git.theobroma-systems.com/jaguar-u-boot.git