ALSA: opl3: More constifications

Apply const prefix to the static tables for drum, volume and notes.

Just for minor optimization and no functional changes.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/drivers/opl3/opl3_drums.c

···
 
 #include "opl3_voice.h"
 
-static char snd_opl3_drum_table[47] =
+static const char snd_opl3_drum_table[47] =
 {
 	OPL3_BASSDRUM_ON,  OPL3_BASSDRUM_ON,  OPL3_HIHAT_ON,	/* 35 - 37 */
 	OPL3_SNAREDRUM_ON, OPL3_HIHAT_ON,     OPL3_SNAREDRUM_ON, /* 38 - 40 */

sound/drivers/opl3/opl3_midi.c

···
  * it saves a lot of log() calculations. (Rob Hooft <[e-mail]>)
  */
 
-static char opl3_volume_table[128] =
+static const char opl3_volume_table[128] =
 {
 	-63, -48, -40, -35, -32, -29, -27, -26,
 	-24, -23, -21, -20, -19, -18, -18, -17,
···
 /*
  * Converts the note frequency to block and fnum values for the FM chip
  */
-static short opl3_note_table[16] =
+static const short opl3_note_table[16] =
 {
 	305, 323,	/* for pitch bending, -2 semitones */
 	343, 363, 385, 408, 432, 458, 485, 514, 544, 577, 611, 647,
···
 /* ------------------------------ */
 
 
-static int snd_opl3_oss_map[MAX_OPL3_VOICES] = {
+static const int snd_opl3_oss_map[MAX_OPL3_VOICES] = {
 	0, 1, 2, 9, 10, 11, 6, 7, 8, 15, 16, 17, 3, 4 ,5, 12, 13, 14
 };