Revert "booti/bootm: riscv: Verify image arch type"

This reverts commit 37b0b22d8b7bbed6aa95b6daed06dcbf4a66f211 as
discussed in [1].

[1] https://lists.denx.de/pipermail/u-boot/2025-May/590841.html

Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c
index c98c5e7..9544907 100644
--- a/arch/riscv/lib/bootm.c
+++ b/arch/riscv/lib/bootm.c
@@ -90,10 +90,6 @@
 	announce_and_cleanup(fake);
 
 	if (!fake) {
-		if (images->os.arch != IH_ARCH_DEFAULT) {
-			printf("Image arch not compatible with host arch.\n");
-			hang();
-		}
 		if (CONFIG_IS_ENABLED(OF_LIBFDT) && images->ft_len) {
 #ifdef CONFIG_SMP
 			ret = smp_call_function(images->ep,
diff --git a/cmd/booti.c b/cmd/booti.c
index ced2c10..1a57fe9 100644
--- a/cmd/booti.c
+++ b/cmd/booti.c
@@ -130,11 +130,8 @@
 	bootm_disable_interrupts();
 
 	images.os.os = IH_OS_LINUX;
-	if (IS_ENABLED(CONFIG_RISCV))
-		if (IS_ENABLED(CONFIG_64BIT))
-			images.os.arch = IH_ARCH_RISCV64;
-		else
-			images.os.arch = IH_ARCH_RISCV;
+	if (IS_ENABLED(CONFIG_RISCV_SMODE))
+		images.os.arch = IH_ARCH_RISCV;
 	else if (IS_ENABLED(CONFIG_ARM64))
 		images.os.arch = IH_ARCH_ARM64;