configure: rename QEMU_GA_MSI_ENABLED to CONFIG_QGA_MSI

The QEMU_GA_MSI_ENABLED config-host.mak variable is emitted by
./configure. meson.build actually checks for CONFIG_QGA_MSI_ENABLED:

  summary_info += {'QGA MSI support':   config_host.has_key('CONFIG_QGA_MSI_ENABLED')}

Rename QEMU_GA_MSI_ENABLED to CONFIG_QGA_MSI for consistency with
CONFIG_QGA_VSS. Also use 'y' instead of 'yes' for consistency.

This fixes the feature summary printed by meson.build.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200914095231.621068-4-stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/Makefile b/Makefile
index 7b2655d..9af24f1 100644
--- a/Makefile
+++ b/Makefile
@@ -285,7 +285,7 @@
 ifdef CONFIG_WIN32
 	@echo  'Windows targets:'
 	$(call print-help,installer,Build NSIS-based installer for QEMU)
-ifdef QEMU_GA_MSI_ENABLED
+ifdef CONFIG_QGA_MSI
 	$(call print-help,msi,Build MSI-based installer for qemu-ga)
 endif
 	@echo  ''
diff --git a/configure b/configure
index 9e19899..f9e2f3d 100755
--- a/configure
+++ b/configure
@@ -6570,7 +6570,7 @@
     echo "CONFIG_QGA_NTDDSCSI=y" >> $config_host_mak
   fi
   if test "$guest_agent_msi" = "yes"; then
-    echo "QEMU_GA_MSI_ENABLED=yes" >> $config_host_mak
+    echo "CONFIG_QGA_MSI=y" >> $config_host_mak
     echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
     echo "QEMU_GA_MSI_WITH_VSS=${QEMU_GA_MSI_WITH_VSS}" >> $config_host_mak
     echo "QEMU_GA_MSI_ARCH=${QEMU_GA_MSI_ARCH}" >> $config_host_mak
diff --git a/meson.build b/meson.build
index 9755be7..975a187 100644
--- a/meson.build
+++ b/meson.build
@@ -1412,7 +1412,7 @@
   endif
   summary_info += {'QGA VSS support':   config_host.has_key('CONFIG_QGA_VSS')}
   summary_info += {'QGA w32 disk info': config_host.has_key('CONFIG_QGA_NTDDSCSI')}
-  summary_info += {'QGA MSI support':   config_host.has_key('CONFIG_QGA_MSI_ENABLED')}
+  summary_info += {'QGA MSI support':   config_host.has_key('CONFIG_QGA_MSI')}
 endif
 summary_info += {'seccomp support':   config_host.has_key('CONFIG_SECCOMP')}
 summary_info += {'coroutine backend': config_host['CONFIG_COROUTINE_BACKEND']}