board: mpfs_icicle: imply new clk driver dependencies

The clock driver for PolarFire SoC now requires syscon and regmap
features, so imply them to preserve implication of the clock driver.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/board/microchip/mpfs_icicle/Kconfig b/board/microchip/mpfs_icicle/Kconfig
index 4309f75..6e8c479 100644
--- a/board/microchip/mpfs_icicle/Kconfig
+++ b/board/microchip/mpfs_icicle/Kconfig
@@ -24,6 +24,8 @@
 	imply SMP
 	imply CLK_CCF
 	imply CLK_MPFS
+	imply REGMAP
+	imply SYSCON
 	imply SYS_NS16550
 	imply CMD_DHCP
 	imply CMD_EXT2