cmd: smccc: Print results in hex instead of dec

Printing return value in HEX instead of DEC. Return values are 64 bit
values which impossible to decode in DEC. For example getting CHIP ID in
dec is quite long.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/9a0278a7da729cb69b7a4d46c5e7eb8c3217c635.1676450712.git.michal.simek@amd.com
diff --git a/cmd/smccc.c b/cmd/smccc.c
index 0539a42..fb80431 100644
--- a/cmd/smccc.c
+++ b/cmd/smccc.c
@@ -43,7 +43,7 @@
 	else
 		arm_smccc_hvc(fid, a1, a2, a3, a4, a5, a6, a7, &res);
 
-	printf("Res:  %ld %ld %ld %ld\n", res.a0, res.a1, res.a2, res.a3);
+	printf("Res:  0x%lx 0x%lx 0x%lx 0x%lx\n", res.a0, res.a1, res.a2, res.a3);
 
 	return 0;
 }