tests/qtest/boot-serial-test: Correct HPPA machine name

Commit 7df6f75 ("hw/hppa: Split out machine creation")
renamed the 'hppa' machine as 'B160L', but forgot to update
the boot serial test, which ended being skipped.

Cc: [email protected]
Fixes: 7df6f75 ("hw/hppa: Split out machine creation")
Reported-by: Thomas Huth <[email protected]>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Reviewed-by: Thomas Huth <[email protected]>
Message-Id: <[email protected]>

Author: philmd

tests/qtest/boot-serial-test.c

@@ -190,7 +190,7 @@ static const testdef_t tests[] = {
       sizeof(kernel_plml605), kernel_plml605 },
     { "arm", "raspi2b", "", "TT", sizeof(bios_raspi2), 0, bios_raspi2 },
     /* For hppa, force bios to output to serial by disabling graphics. */
-    { "hppa", "hppa", "-vga none", "SeaBIOS wants SYSTEM HALT" },
+    { "hppa", "B160L", "-vga none", "SeaBIOS wants SYSTEM HALT" },
     { "aarch64", "virt", "-cpu max", "TT", sizeof(kernel_aarch64),
       kernel_aarch64 },
     { "arm", "microbit", "", "T", sizeof(kernel_nrf51), kernel_nrf51 },