Open image files in binary mode

This is required for read() to function correctly
in Windows since it behaves differently in text mode and
binary mode and may cause unpredictable behavior depending
on the contents of the image file.

Bug: 129281908
Test: fastboot.exe flashall
Change-Id: I64370af44a050bafea60ff1b0b2be18cc531480a
Merged-In: I64370af44a050bafea60ff1b0b2be18cc531480a
(cherry picked from commit 1a6f6feff425edf6076269c0f971675fa41de56c)
1 file changed