clk: sifive: make SiFive clk drivers depend on ARCH_ symbols

As part of converting RISC-V SOC_FOO symbols to ARCH_FOO to match the
use of such symbols on other architectures, convert the SiFive clk
drivers to use the new symbol.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230406-groovy-trustable-15853ac0a130@spudSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/sifive/Kconfig

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