domain: conf: Drop unused OSTYPE_AIX

The phyp driver stuffed it into a DomainDefPtr during its attachdevice
routine, but the value is never advertised via capabilities so it should
be safe to drop.

Have the phyp driver use OSTYPE_LINUX, which is what it advertises via
capabilities.

docs/schemas/capability.rng

@@ -262,7 +262,8 @@
     <element name='os_type'>
       <choice>
         <value>xen</value> <!-- Xen 3.0 pv -->
-        <value>linux</value> <!-- same as 'xen' - legacy -->
+        <value>linux</value> <!-- same as 'xen' - meant to be legacy,
+                                  but is also used by phyp driver -->
         <value>hvm</value> <!-- unmodified OS -->
         <value>exe</value> <!-- For container based virt -->
         <value>uml</value> <!-- user mode linux -->

src/conf/domain_conf.c

@@ -124,8 +124,7 @@ VIR_ENUM_IMPL(virDomainOS, VIR_DOMAIN_OSTYPE_LAST,
               "xen",
               "linux",
               "exe",
-              "uml",
-              "aix")
+              "uml")
 
 VIR_ENUM_IMPL(virDomainBoot, VIR_DOMAIN_BOOT_LAST,
               "fd",

src/conf/domain_conf.h

@@ -233,7 +233,6 @@ typedef enum {
     VIR_DOMAIN_OSTYPE_LINUX,
     VIR_DOMAIN_OSTYPE_EXE,
     VIR_DOMAIN_OSTYPE_UML,
-    VIR_DOMAIN_OSTYPE_AIX,
 
     VIR_DOMAIN_OSTYPE_LAST
 } virDomainOSType;

src/phyp/phyp_driver.c

@@ -1720,7 +1720,7 @@ phypDomainAttachDevice(virDomainPtr domain, const char *xml)
     if (domain_name == NULL)
         goto cleanup;
 
-    def->os.type = VIR_DOMAIN_OSTYPE_AIX;
+    def->os.type = VIR_DOMAIN_OSTYPE_LINUX;
 
     dev = virDomainDeviceDefParse(xml, def, phyp_driver->caps, NULL,
                                   VIR_DOMAIN_DEF_PARSE_INACTIVE);

tests/vircapstest.c

@@ -250,7 +250,7 @@ test_virCapsDomainDataLookupQEMU(const void *data ATTRIBUTE_UNUSED)
         VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_PPC64LE,
         VIR_DOMAIN_VIRT_QEMU, "/usr/bin/qemu-system-ppc64", "pseries");
 
-    CAPS_EXPECT_ERR(VIR_DOMAIN_OSTYPE_AIX, VIR_ARCH_NONE, -1, NULL, NULL);
+    CAPS_EXPECT_ERR(VIR_DOMAIN_OSTYPE_LINUX, VIR_ARCH_NONE, -1, NULL, NULL);
     CAPS_EXPECT_ERR(-1, VIR_ARCH_PPC64LE, -1, NULL, "pc");
     CAPS_EXPECT_ERR(-1, VIR_ARCH_MIPS, -1, NULL, NULL);
     CAPS_EXPECT_ERR(-1, VIR_ARCH_AARCH64, VIR_DOMAIN_VIRT_KVM,