arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM

arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM

Add device tree overlay to support the MayQueen PixPaper e-paper display
on the NXP i.MX93 FRDM board. The display is connected via LPSPI3
interface and uses GPIO pins for reset, busy and DC control.

The overlay configures:
    - LPSPI3 pinmux for SPI communication (MOSI, MISO, CLK, CE0)
    - PixPaper display device with proper GPIO assignments
    - SPI frequency set to 1MHz for stable operation

Enable Open-EP Community pixpaper-213-c support on NXP i.MX93.

Signed-off-by: Wig Cheng <onlywig@gmail.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>