packagegroup-core-boot: add bootloader to EFI systems

Since the bootloader is now installed instead of added at image creation
time, this is necessary for booting.

Also set the default to grub-efi. This is done because a default of
grub-efi is already used by live-vm-common.bbclass, and in the event
that EFI_PROVIDER isn't defined errors would occur.

(From OE-Core rev: d8a670726fb6b2553c792a1c66346f975f040135)

Signed-off-by: California Sullivan <california.l.sullivan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/packagegroups/packagegroup-core-boot.bb

@@ -23,6 +23,8 @@ VIRTUAL-RUNTIME_init_manager ?= "sysvinit"
 VIRTUAL-RUNTIME_initscripts ?= "initscripts"
 VIRTUAL-RUNTIME_keymaps ?= "keymaps"
 
+EFI_PROVIDER ??= "grub-efi"
+
 SYSVINIT_SCRIPTS = "${@bb.utils.contains('MACHINE_FEATURES', 'rtc', '${VIRTUAL-RUNTIME_base-utils-hwclock}', '', d)} \
                     modutils-initscripts \
                     init-ifupdown \
@@ -35,6 +37,7 @@ RDEPENDS_${PN} = "\
     ${VIRTUAL-RUNTIME_base-utils} \
     ${@bb.utils.contains("DISTRO_FEATURES", "sysvinit", "${SYSVINIT_SCRIPTS}", "", d)} \
     ${@bb.utils.contains("MACHINE_FEATURES", "keyboard", "${VIRTUAL-RUNTIME_keymaps}", "", d)} \
+    ${@bb.utils.contains("MACHINE_FEATURES", "efi", "${EFI_PROVIDER}", "", d)} \
     netbase \
     ${VIRTUAL-RUNTIME_login_manager} \
     ${VIRTUAL-RUNTIME_init_manager} \