reset: RESET_MCHP_SPARX5 should depend on ARCH_SPARX5

The Microchip Sparx5 switch reset block is only present on Microchip
Sparx5 SoCs.  Hence add a dependency on ARCH_SPARX5, to prevent asking
the user about this driver when configuring a kernel without Sparx5
support.

Fixes: 453ed42 ("reset: mchp: sparx5: add switch reset driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6e08f6f46123d0712397e901716b48f13fa5dc48.1624627657.git.geert@linux-m68k.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/reset/Kconfig

@@ -116,7 +116,7 @@ config RESET_LPC18XX
 
 config RESET_MCHP_SPARX5
 	bool "Microchip Sparx5 reset driver"
-	depends on HAS_IOMEM || COMPILE_TEST
+	depends on ARCH_SPARX5 || COMPILE_TEST
 	default y if SPARX5_SWITCH
 	select MFD_SYSCON
 	help