uboot-omap: Update to u-boot v2017.01

Specifying USE_PRIVATE_LIBGCC is no longer needed, as it is the
default.

Patch 001 is removed, since it was already merged upstream. Patches
100 and 101 are removed because they do not appear to be needed
anymore, and they do not conform with the sign-off and commit message
procedures.

Signed-off-by: Alexandru Gagniuc <alex.g@adaptrum.com>