uninative.bbclass: Choose the correct loader based on BUILD_ARCH
Previously UNINATIVE_LOADER was always ld-linux-x86-64.so.2. That is
incorrect when the host is 32-bit.
This change also changes to using ?= so the user can override
UNINATIVE_LOADER if so desired.
[YOCTO #8124]
(From OE-Core master rev:
b78fa0bcadd54bb29b6f1bb3a9308d4c454bf4e2)
Signed-off-by: Randy Witt <randy.e.witt@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
