removed extra spaces

Signed-off-by: Du Huanpeng <dhu@hodcarrier.org>

Signed-off-by: Du Huanpeng <dhu@hodcarrier.org>

Problem with first system tick was detected, it needs much more time for the first tick as it's defined. The reason for this behavior is incorrect initialization of the SysTick timer in the port file for the Cortex-M0. It doesn't reset the SysTick Current Value Register despite the fact that its value is not initialized at startup (see https://developer.arm.com/documentation/dui0552/a/cortex-m3-peripherals/system-timer--systick). So if we have 0xFFFFFF (this register has 24-bit), it means we will get about 256*256*256 / 48000000 for the tact frequency of 48MHz to reach the zero, that makes 350ms delay at startup.

Merge pull request #510 from eclipse-threadx/dev

Changed default value to TX_16_ULONG.

Fixed TX_TIMER_TICKS_PER_SECOND default value in tx_user_sample.h

Added rv64 rvv support

Removed extra spaces in tx_port.h.

Fixed the link flag in the Cortex-A9 sample

- Introduce THREADX_SMP option in root CMakeLists.txt.
- Implement conditional source and port directory selection for SMP builds.
- Add CMake support for common_smp and Cortex-A9 SMP port.
- Fix linker flags in Cortex-A9 SMP sample build script.
- Remove duplicate invalidateCaches_IS declarations in v7.h headers.

Assisted-by: Gemini (Experimental)

Added conditional CMake support for ThreadX SMP

Fixed SysTick initialization problem in tx_initialize_low_level.s for Cortex-M0.

Fixed typos in several regression test files