reset: pistachio: add driver Kconfig option

Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.

Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Acked-by: NJames Hartley <james.hartley@imgtec.com>
Reviewed-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>

drivers/reset/Kconfig

@@ -42,6 +42,12 @@ config RESET_MESON
 config RESET_OXNAS
 	bool
 
+config RESET_PISTACHIO
+	bool "Pistachio Reset Driver" if COMPILE_TEST
+	default MACH_PISTACHIO
+	help
+	  This enables the reset driver for ImgTec Pistachio SoCs.
+
 config TI_SYSCON_RESET
 	tristate "TI SYSCON Reset Driver"
 	depends on HAS_IOMEM

drivers/reset/Makefile

 obj-y += core.o
 obj-$(CONFIG_ARCH_SOCFPGA) += reset-socfpga.o
-obj-$(CONFIG_MACH_PISTACHIO) += reset-pistachio.o
 obj-$(CONFIG_ARCH_STM32) += reset-stm32.o
 obj-$(CONFIG_ARCH_SUNXI) += reset-sunxi.o
 obj-$(CONFIG_ARCH_STI) += sti/
@@ -11,5 +10,6 @@ obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o
 obj-$(CONFIG_RESET_MESON) += reset-meson.o
 obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
+obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o
 obj-$(CONFIG_TI_SYSCON_RESET) += reset-ti-syscon.o
 obj-$(CONFIG_RESET_UNIPHIER) += reset-uniphier.o