reset: tegra-bpmp: allow building under COMPILE_TEST

The Tegra BPMP reset driver can be compiled without TEGRA_BPMP being
enabled. Allow it to be built under COMPILE_TEST.
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20240625-reset-compile-bpmp-v1-1-647e846303d8@pengutronix.deSigned-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/reset/Makefile

@@ -3,7 +3,7 @@ obj-y += core.o
 obj-y += hisilicon/
 obj-y += starfive/
 obj-y += sti/
-obj-$(CONFIG_ARCH_TEGRA) += tegra/
+obj-y += tegra/
 obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o

drivers/reset/tegra/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config RESET_TEGRA_BPMP
-	def_bool TEGRA_BPMP
+	bool "Tegra BPMP Reset Driver" if COMPILE_TEST
+	default TEGRA_BPMP