remoteproc: Fix use of format specifyer

The dma_addr_t type can be either u32 or u64 depending on
the configuration. We should use a format specifyer for the
larger type and explicitly cast to it.

Sparse warnings:
drivers/remoteproc/remoteproc_core.c:234:2: warning:
	format ‘%x’ expects argument of type ‘unsigned int’,
	but argument 6 has type ‘dma_addr_t’ [-Wformat]

drivers/remoteproc/remoteproc_core.c:596:2: warning:
	format ‘%x’ expects argument of type ‘unsigned int’,
	but argument 5 has type ‘dma_addr_t’ [-Wformat]

drivers/remoteproc/remoteproc_core.c:634:3:
	warning: format ‘%x’ expects argument of type ‘unsigned int’,
	but argument 5 has type ‘dma_addr_t’ [-Wformat]

Signed-off-by: Emil Goode <emilgoode@gmail.com>
[fix commit log typos]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>