mfd: Drop obsolete dependencies on COMPILE_TEST

Since commit 0166dc11be91 ("of: make CONFIG_OF user selectable"), it
is possible to test-build any driver which depends on OF on any
architecture by explicitly selecting OF. Therefore depending on
COMPILE_TEST as an alternative is no longer needed.

It is actually better to always build such drivers with OF enabled,
so that the test builds are closer to how each driver will actually be
built on its intended target. Building them without OF may not test
much as the compiler will optimize out potentially large parts of the
code. In the worst case, this could even pop false positive warnings.
Dropping COMPILE_TEST here improves the quality of our testing and
avoids wasting time on non-existent issues.

As a minor optimization, this also lets us drop of_match_ptr(), as we
now know what it will resolve to, we might as well save cpp some work.

Signed-off-by: Jean Delvare <[e-mail]>
Cc: Lee Jones <[e-mail]>
Cc: Bartosz Golaszewski <[e-mail]>
Cc: Chanwoo Choi <[e-mail]>
Cc: Krzysztof Kozlowski <[e-mail]>
Cc: Bartlomiej Zolnierkiewicz <[e-mail]>
Cc: Luca Ceresoli <[e-mail]>
Cc: "Jonathan Neuschäfer" <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/mfd/Kconfig

···
 config MFD_MAX77620
 	bool "Maxim Semiconductor MAX77620 and MAX20024 PMIC Support"
 	depends on I2C=y
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	select REGMAP_IRQ
···
 config MFD_MAX77650
 	tristate "Maxim MAX77650/77651 PMIC Support"
 	depends on I2C
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	select REGMAP_IRQ
···
 config MFD_MAX77686
 	tristate "Maxim Semiconductor MAX77686/802 PMIC Support"
 	depends on I2C
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	select REGMAP_IRQ
···
 config MFD_MAX77714
 	tristate "Maxim Semiconductor MAX77714 PMIC Support"
 	depends on I2C
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	help
···
 config MFD_CPCAP
 	tristate "Support for Motorola CPCAP"
 	depends on SPI
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_SPI
 	select REGMAP_IRQ
···
 
 config MFD_NTXEC
 	tristate "Netronix embedded controller (EC)"
-	depends on OF || COMPILE_TEST
+	depends on OF
 	depends on I2C
 	select REGMAP_I2C
 	select MFD_CORE
···
 config MFD_SEC_CORE
 	tristate "Samsung Electronics PMIC Series Support"
 	depends on I2C=y
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	select REGMAP_IRQ
···
 config MFD_STMFX
 	tristate "Support for STMicroelectronics Multi-Function eXpander (STMFX)"
 	depends on I2C
-	depends on OF || COMPILE_TEST
+	depends on OF
 	select MFD_CORE
 	select REGMAP_I2C
 	help

drivers/mfd/motorola-cpcap.c

···
 	struct cpcap_ddata *cpcap;
 	int ret;
 
-	match = of_match_device(of_match_ptr(cpcap_of_match), &spi->dev);
+	match = of_match_device(cpcap_of_match, &spi->dev);
 	if (!match)
 		return -ENODEV;