tree 25dcc283624d0cf8ecc1f44ba789f83fbbffd7e1
parent 557767ed29968af0294e3aae48433e5d5a298e0b
author Masahiro Yamada <yamada.masahiro@socionext.com> 1514566805 +0900
committer Jaehoon Chung <jh80.chung@samsung.com> 1516597918 +0900

dm: add dev_read_u32()

dev_read_u32_default() always returns something even when the property
is missing.  So, it is impossible to do nothing in the case.  One
solution is to use ofnode_read_u32() instead, but adding dev_read_u32()
will be helpful.

BTW, Linux has an equvalent function, device_property_read_u32();
it is clearer that it reads a property.  I cannot understand the
behavior of dev_read_u32() from its name.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>