check_elf_alignment.sh: Escape star chars

2**10 matches 10, 222210, etc. Escape the star characters to make sure
we actually match star, as intended

Test: [[ "10" =~ 2**10 ]] [[ "10" =~ 2\*\*10 ]] [[ "2**10" =~ 2\*\*10 ]]

Change-Id: I88f30a5ad05bb5d0b352990574a9a1f4e5f8ae40
Signed-off-by: Shoham Peller <shohamp@gmail.com>
1 file changed