tests/qtest/boot-serial-test: Improve ASM comments of PL011 tests

Re-indent ASM comments adding the 'loop:' label.

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Reviewed-by: Fabiano Rosas <[email protected]>
Signed-off-by: Peter Maydell <[email protected]>

Author: philmd

tests/qtest/boot-serial-test.c

@@ -70,18 +70,18 @@ static const uint8_t kernel_plml605[] = {
 };
 
 static const uint8_t bios_raspi2[] = {
-    0x08, 0x30, 0x9f, 0xe5,                 /* ldr   r3,[pc,#8]    Get base */
-    0x54, 0x20, 0xa0, 0xe3,                 /* mov     r2,#'T' */
-    0x00, 0x20, 0xc3, 0xe5,                 /* strb    r2,[r3] */
-    0xfb, 0xff, 0xff, 0xea,                 /* b       loop */
-    0x00, 0x10, 0x20, 0x3f,                 /* 0x3f201000 = UART0 base addr */
+    0x08, 0x30, 0x9f, 0xe5,                 /* loop:  ldr     r3, [pc, #8]   Get &UART0 */
+    0x54, 0x20, 0xa0, 0xe3,                 /*        mov     r2, #'T' */
+    0x00, 0x20, 0xc3, 0xe5,                 /*        strb    r2, [r3]       *TXDAT = 'T' */
+    0xfb, 0xff, 0xff, 0xea,                 /*        b       -12            (loop) */
+    0x00, 0x10, 0x20, 0x3f,                 /* UART0: 0x3f201000 */
 };
 
 static const uint8_t kernel_aarch64[] = {
-    0x81, 0x0a, 0x80, 0x52,                 /* mov     w1, #0x54 */
-    0x02, 0x20, 0xa1, 0xd2,                 /* mov     x2, #0x9000000 */
-    0x41, 0x00, 0x00, 0x39,                 /* strb    w1, [x2] */
-    0xfd, 0xff, 0xff, 0x17,                 /* b       -12 (loop) */
+    0x81, 0x0a, 0x80, 0x52,                 /* loop:  mov    w1, #'T' */
+    0x02, 0x20, 0xa1, 0xd2,                 /*        mov    x2, #0x9000000  Load UART0 */
+    0x41, 0x00, 0x00, 0x39,                 /*        strb   w1, [x2]        *TXDAT = 'T' */
+    0xfd, 0xff, 0xff, 0x17,                 /*        b      -12             (loop) */
 };
 
 static const uint8_t kernel_nrf51[] = {