drivers: clk: add fu740 support

Add fu740 support. One abstract layer is added for supporting
multiple chips such as fu540 and fu740.

Signed-off-by: Green Wan <green.wan@sifive.com>
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 019565f..91303ec 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -166,7 +166,7 @@
 
 config RESET_SIFIVE
 	bool "Reset Driver for SiFive SoC's"
-	depends on DM_RESET && CLK_SIFIVE_FU540_PRCI && TARGET_SIFIVE_UNLEASHED
+	depends on DM_RESET && CLK_SIFIVE_PRCI && TARGET_SIFIVE_UNLEASHED
 	default y
 	help
 	  PRCI module within SiFive SoC's provides mechanism to reset