Signed-off-by: Huaqi Fang <578567190@qq.com>

新增函数 pclkx_doubler_get 用于获取定时器时钟倍频状态

好的，已修正。

抱歉,这里有个失误.

use space instead of table for indentation in ls2k_ram.lds

STM32的硬件定时器在 APBxCLKDivider 为 RCC_HCLK_DIV1 的时候，timer clocks 频率等于外设总线时钟PCLKx. 反之 timer clocks 为 PCLKx 的2倍.

from ls2k user manuanl know that GPIO0_I is input, GPIO1_I is reserved.
here typo error, fix it.

rtc driver can not configured through Kconfig

[stm32] perform an automatic ADC calibration to improve the conversion accuracy using function HAL_ADCEx_Calibration_Start().

2. Fix spi/qspi/uspi TX/RX PDMA trigger issue.
3. Drain RX FIFO to remove remain FEF frames in FIFO.
4. Implement RT_DEVICE_CTRL_CLOSE in uart/uuart/scuart driver.

Update SConstruct fix compilation error