ALSA: Constify snd_timer_hardware definitions

Most of snd_timer_hardware definitions do simply copying to another
struct as-is.  Mark them as const for further optimization.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-22-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/opl3/opl3_lib.c

@@ -214,7 +214,7 @@ static int snd_opl3_timer2_stop(struct snd_timer * timer)
 
  */
 
-static struct snd_timer_hardware snd_opl3_timer1 =
+static const struct snd_timer_hardware snd_opl3_timer1 =
 {
 	.flags =	SNDRV_TIMER_HW_STOP,
 	.resolution =	80000,
@@ -223,7 +223,7 @@ static struct snd_timer_hardware snd_opl3_timer1 =
 	.stop =		snd_opl3_timer1_stop,
 };
 
-static struct snd_timer_hardware snd_opl3_timer2 =
+static const struct snd_timer_hardware snd_opl3_timer2 =
 {
 	.flags =	SNDRV_TIMER_HW_STOP,
 	.resolution =	320000,

sound/isa/gus/gus_timer.c

@@ -108,7 +108,7 @@ static void snd_gf1_interrupt_timer2(struct snd_gus_card * gus)
 
  */
 
-static struct snd_timer_hardware snd_gf1_timer1 =
+static const struct snd_timer_hardware snd_gf1_timer1 =
 {
 	.flags =	SNDRV_TIMER_HW_STOP,
 	.resolution =	80000,
@@ -117,7 +117,7 @@ static struct snd_timer_hardware snd_gf1_timer1 =
 	.stop =		snd_gf1_timer1_stop,
 };
 
-static struct snd_timer_hardware snd_gf1_timer2 =
+static const struct snd_timer_hardware snd_gf1_timer2 =
 {
 	.flags =	SNDRV_TIMER_HW_STOP,
 	.resolution =	320000,

sound/isa/wss/wss_lib.c

@@ -961,7 +961,7 @@ static int snd_wss_timer_close(struct snd_timer *timer)
 	return 0;
 }
 
-static struct snd_timer_hardware snd_wss_timer_table =
+static const struct snd_timer_hardware snd_wss_timer_table =
 {
 	.flags =	SNDRV_TIMER_HW_AUTO,
 	.resolution =	9945,

sound/pci/emu10k1/timer.c

@@ -52,7 +52,7 @@ static int snd_emu10k1_timer_precise_resolution(struct snd_timer *timer,
 	return 0;
 }
 
-static struct snd_timer_hardware snd_emu10k1_timer_hw = {
+static const struct snd_timer_hardware snd_emu10k1_timer_hw = {
 	.flags = SNDRV_TIMER_HW_AUTO,
 	.resolution = 20833, /* 1 sample @ 48KHZ = 20.833...us */
 	.ticks = 1024,

sound/pci/ymfpci/ymfpci_main.c

@@ -1908,7 +1908,7 @@ static int snd_ymfpci_timer_precise_resolution(struct snd_timer *timer,
 	return 0;
 }
 
-static struct snd_timer_hardware snd_ymfpci_timer_hw = {
+static const struct snd_timer_hardware snd_ymfpci_timer_hw = {
 	.flags = SNDRV_TIMER_HW_AUTO,
 	.resolution = 10417, /* 1 / 96 kHz = 10.41666...us */
 	.ticks = 0x10000,

sound/sparc/cs4231.c

@@ -869,7 +869,7 @@ static int snd_cs4231_timer_close(struct snd_timer *timer)
 	return 0;
 }
 
-static struct snd_timer_hardware snd_cs4231_timer_table = {
+static const struct snd_timer_hardware snd_cs4231_timer_table = {
 	.flags		=	SNDRV_TIMER_HW_AUTO,
 	.resolution	=	9945,
 	.ticks		=	65535,