spec: Fix UEFI configuration and meson build options

- Remove duplicated have_uefi conditional block that incorrectly disabled
  efi_binary in the second block
- Consolidate UEFI settings into single conditional section
- Add --auto-features=auto for more predictable meson build output
- Restore efi_os_dir configuration that was accidentally dropped

This fixes potential build issues on aarch64 caused by the conflicting
UEFI configuration blocks.

remove --auto-features=aut

fwupd.spec

@@ -279,6 +279,7 @@ cd -
 %if 0%{?have_uefi}
     -Defi_binary=true \
     -Dfwupd-efi:genpeimg=disabled \
+    -Defi_os_dir=%{efi_vendor} \
 %endif
 %if 0%{?have_gi_docgen}
     -Ddocs=enabled \
@@ -295,10 +296,6 @@ cd -
 %else
     -Dplugin_flashrom=disabled \
 %endif
-%if 0%{?have_uefi}
-    -Defi_binary=false \
-    -Defi_os_dir=%{efi_vendor} \
-%endif
 %if 0%{?have_modem_manager}
     -Dplugin_modem_manager=enabled \
 %else