clk: sifive: select by default if SOC_SIFIVE

With the aim of dropping direct selects of drivers from Kconfig.socs,
default the SiFive clock drivers to the value of SOC_SIFIVE.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221005171348.167476-2-conor@kernel.orgSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/sifive/Kconfig

@@ -2,7 +2,8 @@
 
 menuconfig CLK_SIFIVE
 	bool "SiFive SoC driver support"
-	depends on RISCV || COMPILE_TEST
+	depends on SOC_SIFIVE || COMPILE_TEST
+	default SOC_SIFIVE
 	help
 	  SoC drivers for SiFive Linux-capable SoCs.
 
@@ -10,6 +11,7 @@ if CLK_SIFIVE
 
 config CLK_SIFIVE_PRCI
 	bool "PRCI driver for SiFive SoCs"
+	default SOC_SIFIVE
 	select RESET_CONTROLLER
 	select RESET_SIMPLE
 	select CLK_ANALOGBITS_WRPLL_CLN28HPC