On a 32-bit host system, UBSan reports:

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UBSAN: Undefined behaviour in ./arch/sandbox/os/common.c:115:32
signed integer overflow:
83598 * 1000000000 cannot be represented in type 'long int'
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Fix this.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>