[OE-core] [PATCH] bootimg: set default value for LABELS variable

[Ed Bartosh]

With empty LABELS variable build_efi_cfg skips most of its
functionality producing warning message:
    'LABELS not defined, nothing to do'
This causes build failure for efi images.

Setting default value for LABELS to 'boot install' should fix
this issue.

Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
 meta/classes/bootimg.bbclass | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/classes/bootimg.bbclass b/meta/classes/bootimg.bbclass
index 7946839..0249a9d 100644
--- a/meta/classes/bootimg.bbclass
+++ b/meta/classes/bootimg.bbclass
@@ -49,6 +49,8 @@ EFI_CLASS = "${@bb.utils.contains("MACHINE_FEATURES", "efi", "${EFI_PROVIDER}",
 
 KERNEL_IMAGETYPE ??= "bzImage"
 
+LABELS ?= "boot install"
+
 # Include legacy boot if MACHINE_FEATURES includes "pcbios" or if it does not
 # contain "efi". This way legacy is supported by default if neither is
 # specified, maintaining the original behavior.
-- 
2.1.4