global_data: Reduce the size of bus_clk and mem_clk

The bus clock and memory clock are unlikely to go above 4GHz for now, so
reduce the field size to 32 bits.

Signed-off-by: Simon Glass <[e-mail]>

arch/mips/mach-ath79/ar934x/clk.c

···
 {
 	ar934x_update_clock();
 	printf("CPU:       %8ld MHz\n", gd->cpu_clk / 1000000);
-	printf("Memory:    %8ld MHz\n", gd->mem_clk / 1000000);
-	printf("AHB:       %8ld MHz\n", gd->bus_clk / 1000000);
+	printf("Memory:    %8d MHz\n", gd->mem_clk / 1000000);
+	printf("AHB:       %8d MHz\n", gd->bus_clk / 1000000);
 	return 0;
 }
 

arch/mips/mach-octeon/cpu.c

···
 	gd->cpu_clk = ref_clock * FIELD_GET(RST_BOOT_C_MUL, val);
 	gd->bus_clk = ref_clock * FIELD_GET(RST_BOOT_PNR_MUL, val);
 
-	debug("%s: cpu: %lu, bus: %lu\n", __func__, gd->cpu_clk, gd->bus_clk);
+	debug("%s: cpu: %lu, bus: %u\n", __func__, gd->cpu_clk, gd->bus_clk);
 
 	return 0;
 }

include/asm-generic/global_data.h

···
 	/**
 	 * @bus_clk: platform clock rate in Hz
 	 */
-	unsigned long bus_clk;
+	unsigned int bus_clk;
 	/**
 	 * @mem_clk: memory clock rate in Hz
 	 */
-	unsigned long mem_clk;
+	unsigned int mem_clk;
 	/**
 	 * @env_addr: address of environment structure
 	 *