clk: pxa: Use __iomem properly and staticize lock variable

This function is passed an __iomem pointer but we use a u32
pointer instead which makes checkers like spare complain.
Furthermore, "lock" is a pretty poor variable name for a string
that will go into lockdep reports and the symbol isn't marked
static. Cleanup all this.

Acked-by: Robert Jarzmik <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/pxa/clk-pxa.c

···
 #define MDREFR_DB2_MASK	(MDREFR_K2DB2 | MDREFR_K1DB2)
 #define MDREFR_DRI_MASK	0xFFF
 
-DEFINE_SPINLOCK(lock);
+static DEFINE_SPINLOCK(pxa_clk_lock);
 
 static struct clk *pxa_clocks[CLK_MAX];
 static struct clk_onecell_data onecell_data = {
···
 		pxa_clk->lp = clks[i].lp;
 		pxa_clk->hp = clks[i].hp;
 		pxa_clk->gate = clks[i].gate;
-		pxa_clk->gate.lock = &lock;
+		pxa_clk->gate.lock = &pxa_clk_lock;
 		clk = clk_register_composite(NULL, clks[i].name,
 					     clks[i].parent_names, 2,
 					     &pxa_clk->hw, &cken_mux_ops,
···
 }
 
 void pxa2xx_cpll_change(struct pxa2xx_freq *freq,
-			u32 (*mdrefr_dri)(unsigned int), u32 *mdrefr, u32 *cccr)
+			u32 (*mdrefr_dri)(unsigned int), void __iomem *mdrefr,
+			void __iomem *cccr)
 {
 	unsigned int clkcfg = freq->clkcfg;
 	unsigned int unused, preset_mdrefr, postset_mdrefr;

drivers/clk/pxa/clk-pxa.h

···
 
 void pxa2xx_core_turbo_switch(bool on);
 void pxa2xx_cpll_change(struct pxa2xx_freq *freq,
-			u32 (*mdrefr_dri)(unsigned int), u32 *mdrefr,
-			u32 *cccr);
+			u32 (*mdrefr_dri)(unsigned int), void __iomem *mdrefr,
+			void __iomem *cccr);
 int pxa2xx_determine_rate(struct clk_rate_request *req,
 			  struct pxa2xx_freq *freqs,  int nb_freqs);