LPC55S69: fix cosFactor data size in header file

The file 'fsl_powerquad_data.h' declares several dctXXX_cosFactor
arrays with sizes twice larger compared to the actual definitions in
'fsl_powerquad_data.c'.

Author: mathias-arm

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC55S69/drivers/fsl_powerquad_data.h

@@ -26,12 +26,12 @@ extern int32_t idct64_twiddle[128];
 extern int32_t idct128_twiddle[256];
 extern int32_t idct256_twiddle[512];
 extern int32_t idct512_twiddle[1024];
-extern int32_t dct16_cosFactor[32];
-extern int32_t dct32_cosFactor[64];
-extern int32_t dct64_cosFactor[128];
-extern int32_t dct128_cosFactor[256];
-extern int32_t dct256_cosFactor[512];
-extern int32_t dct512_cosFactor[1024];
+extern int32_t dct16_cosFactor[16];
+extern int32_t dct32_cosFactor[32];
+extern int32_t dct64_cosFactor[64];
+extern int32_t dct128_cosFactor[128];
+extern int32_t dct256_cosFactor[256];
+extern int32_t dct512_cosFactor[512];
 
 /*******************************************************************************
  * API