[sanitizer_common][test] Fix SanitizerIoctl/KVM_GET_* tests on Linux/… (llvm#100532)

…sparc64

Two ioctl tests `FAIL` on Linux/sparc64 (both 32 and 64-bit):
```
  SanitizerCommon-Unit :: ./Sanitizer-sparc-Test/SanitizerIoctl/KVM_GET_LAPIC
  SanitizerCommon-Unit :: ./Sanitizer-sparc-Test/SanitizerIoctl/KVM_GET_MP_STATE
```
like
```
compiler-rt/lib/sanitizer_common/tests/./Sanitizer-sparc-Test --gtest_filter=SanitizerIoctl.KVM_GET_LAPIC
--
compiler-rt/lib/sanitizer_common/tests/sanitizer_ioctl_test.cpp:91: Failure
Value of: res
  Actual: false
Expected: true

compiler-rt/lib/sanitizer_common/tests/sanitizer_ioctl_test.cpp:92: Failure
Expected equality of these values:
  ioctl_desc::WRITE
    Which is: 2
  desc.type
    Which is: 1
```
The problem is that Linux/sparc64, like Linux/mips, uses a different
layout for the `ioctl` `request` arg than most other Linux targets as
can be seen in `sanitizer_platform_limits_posix.h` (`IOC_*`). Therefore,
this patch makes the tests use the correct one.

Tested on `sparc64-unknown-linux-gnu` and `x86_64-pc-linux-gnu`.

(cherry picked from commit 9eefe06)

Author: rorth

compiler-rt/lib/sanitizer_common/tests/sanitizer_ioctl_test.cpp

@@ -77,7 +77,8 @@ TEST(SanitizerIoctl, Fixup) {
 // Test decoding KVM ioctl numbers.
 TEST(SanitizerIoctl, KVM_GET_MP_STATE) {
   ioctl_desc desc;
-  unsigned int desc_value = SANITIZER_MIPS ? 0x4004ae98U : 0x8004ae98U;
+  unsigned int desc_value =
+      SANITIZER_MIPS || SANITIZER_SPARC ? 0x4004ae98U : 0x8004ae98U;
   bool res = ioctl_decode(desc_value, &desc);
   EXPECT_TRUE(res);
   EXPECT_EQ(ioctl_desc::WRITE, desc.type);
@@ -86,7 +87,8 @@ TEST(SanitizerIoctl, KVM_GET_MP_STATE) {
 
 TEST(SanitizerIoctl, KVM_GET_LAPIC) {
   ioctl_desc desc;
-  unsigned int desc_value = SANITIZER_MIPS ? 0x4400ae8eU : 0x8400ae8eU;
+  unsigned int desc_value =
+      SANITIZER_MIPS || SANITIZER_SPARC ? 0x4400ae8eU : 0x8400ae8eU;
   bool res = ioctl_decode(desc_value, &desc);
   EXPECT_TRUE(res);
   EXPECT_EQ(ioctl_desc::WRITE, desc.type);