sound: dmasound_atari: Remove obsolete IRQ_TYPE_SLOW

IRQ_TYPE_SLOW is no longer used by the Atari platform interrupt code
since commit 734085651c9b80aa ("[PATCH] m68k: convert atari irq code")
in v2.6.18-rc1, so drop it.

Note that its value has been reused for a different purpose
(IRQ_TYPE_NONE) since commit 6a6de9ef5850d063 ("[PATCH] genirq: core")
in v2.6.18-rc1.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Takashi Iwai <[e-mail]>

sound/oss/dmasound/dmasound_atari.c

···
 	st_mfp.tim_dt_a = 1;	/* Cause interrupt after first event. */
 	st_mfp.tim_ct_a = 8;	/* Turn on event counting. */
 	/* Register interrupt handler. */
-	if (request_irq(IRQ_MFP_TIMA, AtaInterrupt, IRQ_TYPE_SLOW, "DMA sound",
+	if (request_irq(IRQ_MFP_TIMA, AtaInterrupt, 0, "DMA sound",
 			AtaInterrupt))
 		return 0;
 	st_mfp.int_en_a |= 0x20;	/* Turn interrupt on. */