drm/gma500: Remove CONFIG_X86 conditionals from source files

Remove the CONFIG_X86 conditionals from the source code. The driver
already depends on X86 in the Kconfig file. Also, no one has been
trying to build it on a non-x86 platform recently, or they would have
noticed that drm_ttm_cache_flush() doesn't exist.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210129095604.32423-5-tzimmermann@suse.de
(cherry picked from commit 6455af65)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

drivers/gpu/drm/gma500/mmu.c

@@ -48,7 +48,6 @@ static inline uint32_t psb_mmu_pd_index(uint32_t offset)
 	return offset >> PSB_PDE_SHIFT;
 }
 
-#if defined(CONFIG_X86)
 static inline void psb_clflush(void *addr)
 {
 	__asm__ __volatile__("clflush (%0)\n" : : "r"(addr) : "memory");
@@ -63,13 +62,6 @@ static inline void psb_mmu_clflush(struct psb_mmu_driver *driver, void *addr)
 	psb_clflush(addr);
 	mb();
 }
-#else
-
-static inline void psb_mmu_clflush(struct psb_mmu_driver *driver, void *addr)
-{;
-}
-
-#endif
 
 static void psb_mmu_flush_pd_locked(struct psb_mmu_driver *driver, int force)
 {
@@ -293,7 +285,6 @@ static struct psb_mmu_pt *psb_mmu_alloc_pt(struct psb_mmu_pd *pd)
 	for (i = 0; i < (PAGE_SIZE / sizeof(uint32_t)); ++i)
 		*ptes++ = pd->invalid_pte;
 
-#if defined(CONFIG_X86)
 	if (pd->driver->has_clflush && pd->hw_context != -1) {
 		mb();
 		for (i = 0; i < clflush_count; ++i) {
@@ -302,7 +293,6 @@ static struct psb_mmu_pt *psb_mmu_alloc_pt(struct psb_mmu_pd *pd)
 		}
 		mb();
 	}
-#endif
 	kunmap_atomic(v);
 	spin_unlock(lock);
 
@@ -459,7 +449,6 @@ struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev,
 
 	driver->has_clflush = 0;
 
-#if defined(CONFIG_X86)
 	if (boot_cpu_has(X86_FEATURE_CLFLUSH)) {
 		uint32_t tfms, misc, cap0, cap4, clflush_size;
 
@@ -476,7 +465,6 @@ struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev,
 		driver->clflush_mask = driver->clflush_add - 1;
 		driver->clflush_mask = ~driver->clflush_mask;
 	}
-#endif
 
 	up_write(&driver->sem);
 	return driver;
@@ -486,7 +474,6 @@ struct psb_mmu_driver *psb_mmu_driver_init(struct drm_device *dev,
 	return NULL;
 }
 
-#if defined(CONFIG_X86)
 static void psb_mmu_flush_ptes(struct psb_mmu_pd *pd, unsigned long address,
 			       uint32_t num_pages, uint32_t desired_tile_stride,
 			       uint32_t hw_tile_stride)
@@ -534,14 +521,6 @@ static void psb_mmu_flush_ptes(struct psb_mmu_pd *pd, unsigned long address,
 	}
 	mb();
 }
-#else
-static void psb_mmu_flush_ptes(struct psb_mmu_pd *pd, unsigned long address,
-			       uint32_t num_pages, uint32_t desired_tile_stride,
-			       uint32_t hw_tile_stride)
-{
-	drm_ttm_cache_flush();
-}
-#endif
 
 void psb_mmu_remove_pfn_sequence(struct psb_mmu_pd *pd,
 				 unsigned long address, uint32_t num_pages)