dpll: zl3073x: Fix build failure

jira KERNEL-318
Rebuild_History Non-Buildable kernel-6.12.0-124.20.1.el10_1
commit-author Ivan Vecera <ivecera@redhat.com>
commit fa582ca

If CONFIG_ZL3073X is enabled but both CONFIG_ZL3073X_I2C and
CONFIG_ZL3073X_SPI are disabled, the compilation may fail because
CONFIG_REGMAP is not enabled.

Fix the issue by selecting CONFIG_REGMAP when CONFIG_ZL3073X is enabled.

Fixes: 2df8e64 ("dpll: Add basic Microchip ZL3073x support")
	Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Link: https://patch.msgid.link/20250726184145.25769-1-ivecera@redhat.com
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit fa582ca)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

Author: PlaidCat

drivers/dpll/zl3073x/Kconfig

@@ -5,6 +5,7 @@ config ZL3073X
 	depends on NET
 	select DPLL
 	select NET_DEVLINK
+	select REGMAP
 	help
 	  This driver supports Microchip Azurite family DPLL/PTP/SyncE
 	  devices that support up to 5 independent DPLL channels,