19914: boards: complete SD Card MTD definition for several bords r=benpicco a=gschorcht
### Contribution description
This PR completes the MTD definition for the following boards:
- `seeedstudio-gd32`
- `sipeed-longan-nano` including `sipeed-longan-nano-tft`
- `waveshare-nrf52840-eval-kit`
- ESP32x boards that have an SPI SD Card interface and use `mtd_sdcard_default`
### Testing procedure
Green CI
### Issues/PRs references#19465
Prerequisite for PR #19465
19915: drivers/lcd: support MCU 8080 8-bit parallel mode r=benpicco a=gschorcht
### Contribution description
LCD driver ICs usually support
- SPI serial mode,
- MCU 8080 8-bit parallel mode and
- MCU 8080 16-bit parallel mode.
This PR extends the LCD display driver API to support the MCU 8080 8-/16-bit parallel modes and implements a GPIO-driven MCU 8080 8-bit parallel mode.
The following features are already working locally and will be provided as follow-on PRs for which this PR is a prerequisite.
- GPIO-driven bit-banging implementation of the 16-bit mode of the MCU 8080 parallel interface
- Enabling the display on `stm32f723e-disco` and `stm32l496g-disco` using the feature above
- Definition of a low-level API for the parallel modes using the LCD controller of the MCU
- Using FMC for the display on `stm32f723e-disco` and `stm32l496g-disco`
- Using LCD controller for the display of `esp32-wt32-sc01-plus` (PR #19917)
### Testing procedure
The PR can be tested with PR #19917 on top of this PR.
```
BOARD=esp32s3-wt32-sc01-plus make -j8 -C tests/drivers/st77xx flash
```
The following video shows the test.
**Please note** The test is pretty slow because the display has 480 x 320 pixels and the MCU 8080 8-bit parallel interface is realized by a GPIO-driven bit-banging implementation where each GPIO of the data bus is set separately. A follow-up PR will use the ESP32-S3 LCD controller and DMA for this board. This PR just defines the extension of the driver by the parallel interface and provides the bit-banging implementation for MCUs that don't have a LCD controller on chip.
https://github.com/RIOT-OS/RIOT/assets/31932013/c1e3e3d7-05d9-4ca5-8fff-9a5eaca50fba
### Issues/PRs references
Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
