soc: esp32c3: fix soc architecture definition

Update ESP32-C3 architecture as IMC instead IMA.

Although not documented, ESP32-S3 supports CSR instructions.
It also needs to be enabled, otherwise build will fail.

Fixes #53555

Signed-off-by: Sylvio Alves <[email protected]>

Author: sylvioalves

soc/riscv/esp32c3/Kconfig.soc

@@ -12,9 +12,8 @@ config SOC_ESP32C3
 	select HAS_ESPRESSIF_HAL
 	select RISCV_ISA_RV32I
 	select RISCV_ISA_EXT_M
-	select RISCV_ISA_EXT_A
+	select RISCV_ISA_EXT_C
 	select RISCV_ISA_EXT_ZICSR
-	select RISCV_ISA_EXT_ZIFENCEI
 
 if SOC_ESP32C3