riscv: Rename Andes PLIC to PLICSW

As PLICSW is used to trigger the software interrupt, we should rename
Andes PLIC configuration and file name to reflect the usage. This patch
also updates PLMT and PLICSW compatible strings to be consistent with
OpenSBI fdt driver.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Rick Chen <rick@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 8f95781..4d64e9b 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -199,7 +199,7 @@
 	help
 	  This enables the operations to configure SiFive cache
 
-config ANDES_PLIC
+config ANDES_PLICSW
 	bool
 	depends on RISCV_MMODE || SPL_RISCV_MMODE
 	select REGMAP
@@ -207,8 +207,8 @@
 	select SPL_REGMAP if SPL
 	select SPL_SYSCON if SPL
 	help
-	  The Andes PLIC block holds memory-mapped claim and pending registers
-	  associated with software interrupt.
+	  The Andes PLICSW block holds memory-mapped claim and pending
+	  registers associated with software interrupt.
 
 config SMP
 	bool "Symmetric Multi-Processing"