[BH-1770][BH-1677] Update fsl drivers

Now the system uses 2.14.0 version.
Add only necessary drivers:
- pit
- pmu
- rtwdog
- snvs_hp
- snvs_lp
- src
- trng
- wdog
- gpio
- gpt
- lpi2c
- lpuart
- lpuart_edma
- common
- common_arm
- dmamux
- edma
- flexram
- flexram_allocate
- clock
- cache
- CMSIS
- dcp
- iomuxc

Changed speed of the USDHC clock from ~109MHz to ~81MHz.
Also changed bus timing from kMMC_HighSpeedTiming to
kMMC_HighSpeed200Timing for better efficiency.