spi: pl022: Don't touch unspecified bits in interrupt mask

spi: pl022: Don't touch unspecified bits in interrupt mask

PL022 Programmers model explicitely states "do not modify undefined register bits". Correct the "all enable" interrupt mask so that it only enables defined ones.

---
 drivers/spi/spi-pl022.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

index f68cbf6..0566657 100644
@@ -278,7 +278,12 @@
  */
 #define DEFAULT_SSP_REG_IMSC  0x0UL
 #define DISABLE_ALL_INTERRUPTS DEFAULT_SSP_REG_IMSC
-#define ENABLE_ALL_INTERRUPTS (~DEFAULT_SSP_REG_IMSC)
+#define ENABLE_ALL_INTERRUPTS ( \
+	SSP_IMSC_MASK_RORIM | \
+	SSP_IMSC_MASK_RTIM | \
+	SSP_IMSC_MASK_RXIM | \
+	SSP_IMSC_MASK_TXIM \
+)
 
 #define CLEAR_ALL_INTERRUPTS  0x3
 

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Applied, thanks.