ARM: iop32x: make mach/uncompress.h independent of mach/hardware.h

All supported uarts use the same address: IQ80321_UART and IQ31244_UART
are both defined to the default value of 0xfe800000. By using that as
the address unconditionally, all dependencies on other machine headers
can be avoided.

Link: https://lore.kernel.org/r/20190809163334.489360-6-arnd@arndb.deSigned-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-iop32x/include/mach/uncompress.h

@@ -6,9 +6,8 @@
 #include <asm/types.h>
 #include <asm/mach-types.h>
 #include <linux/serial_reg.h>
-#include <mach/hardware.h>
 
-volatile u8 *uart_base;
+#define uart_base ((volatile u8 *)0xfe800000)
 
 #define TX_DONE		(UART_LSR_TEMT | UART_LSR_THRE)
 
@@ -23,17 +22,4 @@ static inline void flush(void)
 {
 }
 
-static __inline__ void __arch_decomp_setup(unsigned long arch_id)
-{
-	if (machine_is_iq80321())
-		uart_base = (volatile u8 *)IQ80321_UART;
-	else if (machine_is_iq31244() || machine_is_em7210())
-		uart_base = (volatile u8 *)IQ31244_UART;
-	else
-		uart_base = (volatile u8 *)0xfe800000;
-}
-
-/*
- * nothing to do
- */
-#define arch_decomp_setup()	__arch_decomp_setup(arch_id)
+#define arch_decomp_setup() do { } while (0)