Driver: Fixed typo in SAI Driver interface macro. (ARM-software#849)

ARM_SAI_ERROR_FRAME_LENG*HT* => ARM_SAI_ERROR_FRAME_LENG*TH*
Using @deprecated to notice the wrong one, and added the new.

Change-Id: Ieb4eb047752c29079baa810e88b879800d508921

CMSIS/DoxyGen/Driver/src/Driver_SAI.c

@@ -281,7 +281,7 @@ The <b>MCLK pin</b> setting requested with the function \ref ARM_SAI_Control is
 \def ARM_SAI_ERROR_MCLK_PRESCALER       
 The <b>MCLK prescaler</b> requested with the function \ref ARM_SAI_Control is not supported.
 
-\def ARM_SAI_ERROR_FRAME_LENGHT
+\def ARM_SAI_ERROR_FRAME_LENGTH
 The <b>frame length</b> requested with the function \ref ARM_SAI_Control is not supported.
 
 \def ARM_SAI_ERROR_FRAME_SYNC_WIDTH 

CMSIS/Driver/Include/Driver_SAI.h

@@ -173,7 +173,8 @@ extern "C"
 #define ARM_SAI_ERROR_AUDIO_FREQ            (ARM_DRIVER_ERROR_SPECIFIC - 8)     ///< Specified Audio frequency not supported
 #define ARM_SAI_ERROR_MCLK_PIN              (ARM_DRIVER_ERROR_SPECIFIC - 9)     ///< Specified MCLK Pin setting not supported
 #define ARM_SAI_ERROR_MCLK_PRESCALER        (ARM_DRIVER_ERROR_SPECIFIC - 10)    ///< Specified MCLK Prescaler not supported
-#define ARM_SAI_ERROR_FRAME_LENGHT          (ARM_DRIVER_ERROR_SPECIFIC - 11)    ///< Specified Frame length not supported
+#define ARM_SAI_ERROR_FRAME_LENGTH          (ARM_DRIVER_ERROR_SPECIFIC - 11)    ///< Specified Frame length not supported
+#define ARM_SAI_ERROR_FRAME_LENGHT          (ARM_DRIVER_ERROR_SPECIFIC - 11)    ///< Specified Frame length not supported @deprecated use \ref ARM_SAI_ERROR_FRAME_LENGTH instead
 #define ARM_SAI_ERROR_FRAME_SYNC_WIDTH      (ARM_DRIVER_ERROR_SPECIFIC - 12)    ///< Specified Frame Sync width not supported
 #define ARM_SAI_ERROR_FRAME_SYNC_POLARITY   (ARM_DRIVER_ERROR_SPECIFIC - 13)    ///< Specified Frame Sync polarity not supported
 #define ARM_SAI_ERROR_FRAME_SYNC_EARLY      (ARM_DRIVER_ERROR_SPECIFIC - 14)    ///< Specified Frame Sync early not supported