For Linux builds if the embedded data length exceeded 16-bit value then
the build used to fail with following error:
build/x509_crt_bundle.S: Assembler messages:
build/x509_crt_bundle.S:4201: Warning: value 0x1056e truncated to 0x56e
GNU ASM for X86 systems treats .word attribute as of size 2 bytes, this commit
uses .long attribute to take the size to 4 bytes.