lib: div64: Add support for round up of div64_u64
Most of the frequencies are not rounded up to a proper number. When we need to devide these frequencies to get a number for example frequency in Mhz, we see it as one less than the actual intended value. Ex: If we want to get Mhz from frequency 199999994hz, we will calculate it using div64_u64(199999994, 1000000) and we will get 199Mhz in place of 200Mhz. Add a macro DIV64_U64_ROUND_UP for rounding up div64_u64. This is taken from linux 'commit 68600f623d69("mm: don't miss the last page because of round-off error")'. Signed-off-by:Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> Signed-off-by:
Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/f9fdcba76cd692ae436b1d7883b490e3dc207231.1645626962.git.michal.simek@xilinx.com
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