KVM: s390: selftests: correct IP.b length in uc_handle_sieic debug output

The length of the interrupt parameters (IP) are:
a: 2 bytes
b: 4 bytes

Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Link: https://lore.kernel.org/r/20241107141024.238916-6-schlameuss@linux.ibm.com
[frankja@linux.ibm.com: Fixed patch prefix]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Message-ID: <20241107141024.238916-6-schlameuss@linux.ibm.com>

Author: schlac

tools/testing/selftests/kvm/s390x/ucontrol_test.c

@@ -376,7 +376,7 @@ static bool uc_handle_sieic(FIXTURE_DATA(uc_kvm) *self)
 	struct kvm_run *run = self->run;
 
 	/* check SIE interception code */
-	pr_info("sieic: 0x%.2x 0x%.4x 0x%.4x\n",
+	pr_info("sieic: 0x%.2x 0x%.4x 0x%.8x\n",
 		run->s390_sieic.icptcode,
 		run->s390_sieic.ipa,
 		run->s390_sieic.ipb);