media: sound, media: allow building ISA drivers it with COMPILE_TEST

All sound drivers that don't depend on PNP can be safelly
build with COMPILE_TEST, as ISA provides function stubs to
be used for such purposes.

As a side effect, with this change, the radio-miropcm20
can now be built outside i386 with COMPILE_TEST.

It should be noticed that ISAPNP currently depends on ISA.
So, on drivers that depend on it, we need to add an
explicit dependency on ISA, at least until another patch
removes it.
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/radio/Kconfig

@@ -368,7 +368,8 @@ config RADIO_GEMTEK_PROBE
 
 config RADIO_MIROPCM20
 	tristate "miroSOUND PCM20 radio"
-	depends on ISA && ISA_DMA_API && VIDEO_V4L2 && SND
+	depends on ISA || COMPILE_TEST
+	depends on ISA_DMA_API && VIDEO_V4L2 && SND
 	select SND_ISA
 	select SND_MIRO
 	---help---

sound/isa/Kconfig

@@ -20,7 +20,8 @@ config SND_SB16_DSP
 
 menuconfig SND_ISA
 	bool "ISA sound devices"
-	depends on ISA && ISA_DMA_API
+	depends on ISA || COMPILE_TEST
+	depends on ISA_DMA_API
 	default y
 	help
 	  Support for sound devices connected via the ISA bus.
@@ -38,7 +39,7 @@ config SND_ADLIB
 
 config SND_AD1816A
 	tristate "Analog Devices SoundPort AD1816A"
-	depends on PNP
+	depends on PNP && ISA
 	select ISAPNP
 	select SND_OPL3_LIB
 	select SND_MPU401_UART
@@ -66,7 +67,7 @@ config SND_AD1848
 
 config SND_ALS100
 	tristate "Diamond Tech. DT-019x and Avance Logic ALSxxx"
-	depends on PNP
+	depends on PNP && ISA
 	select ISAPNP
 	select SND_OPL3_LIB
 	select SND_MPU401_UART
@@ -107,7 +108,7 @@ config SND_AZT2316
 
 config SND_AZT2320
 	tristate "Aztech Systems AZT2320"
-	depends on PNP
+	depends on PNP && ISA
 	select ISAPNP
 	select SND_OPL3_LIB
 	select SND_MPU401_UART