Summary: - I noticed that 'make import' failed due to recent changes in nuttx - This commit fixes this issue by adding logic for -lm - Also applies the same style for -lgcc Impact: - CONFIG_BUILD_KERNEL=y only Testing: - Build (mkimport, make import) with sama5d4-ek:knsh Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>