soc: imxrt: mimxrt1011 i2s clock fix

Fix for compiling i2s drivers on the NXP mimxrt1010_evk board.
For mimxrt1011, the defines kCLOCK_Sai2... are not defined as the sai2
peripheral does not exist. Trying to compile gives error. Fixed by adding
check for device tree node around code that uses the defines. Also added
same for sai1 and sai3. Thanks @lucien-nxp, @ZhaoxiangJin from NXP.

Signed-off-by: Imran Sajjad <imran.sajjad@iconfitness.com>