ARM: dma: use phys_addr_t in __dma_page_[cpu_to_dev/dev_to_cpu]
On a 32 bit ARM architecture with LPAE extension physical addresses
cannot fit into unsigned long variable.
So fix it by using phys_addr_t instead of unsigned long.
Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>