remoteproc: qcom: pil_info: avoid 64-bit division

On 32-bit machines with 64-bit resource_size_t, the driver causes
a link failure because of the 64-bit division:

arm-linux-gnueabi-ld: drivers/remoteproc/qcom_pil_info.o: in function `qcom_pil_info_store':
qcom_pil_info.c:(.text+0x1ec): undefined reference to `__aeabi_uldivmod'

Add a cast to an u32 to avoid this. If the resource exceeds 4GB,
there are bigger problems.

Fixes: 549b67da ("remoteproc: qcom: Introduce helper to store pil info in IMEM")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210103135628.3702427-1-arnd@kernel.orgSigned-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/qcom_pil_info.c

@@ -56,7 +56,7 @@ static int qcom_pil_info_init(void)
 	memset_io(base, 0, resource_size(&imem));
 
 	_reloc.base = base;
-	_reloc.num_entries = resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;
+	_reloc.num_entries = (u32)resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;
 
 	return 0;
 }