arm: stm32mp: bsec: remove unneeded test

Remove the test offs < 0 , as offs is unsigned.

This patch solves the warnings when compiling with W=1
on stm32mp1 board:

In function ‘stm32mp_bsec_read’:
arch/arm/mach-stm32mp/bsec.c:368:11: warning:
comparison of unsigned expression < 0 is always false [-Wtype-limits]
  368 |  if (offs < 0 || (offs % 4) || (size % 4))
      |           ^
In function ‘stm32mp_bsec_write’:
arch/arm/mach-stm32mp/bsec.c:405:11: warning:
comparison of unsigned expression < 0 is always false [-Wtype-limits]
  405 |  if (offs < 0 || (offs % 4) || (size % 4))
      |           ^

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/mach-stm32mp/bsec.c b/arch/arm/mach-stm32mp/bsec.c
index a77c706..1d904ca 100644
--- a/arch/arm/mach-stm32mp/bsec.c
+++ b/arch/arm/mach-stm32mp/bsec.c
@@ -365,7 +365,7 @@
 		shadow = false;
 	}
 
-	if (offs < 0 || (offs % 4) || (size % 4))
+	if ((offs % 4) || (size % 4))
 		return -EINVAL;
 
 	otp = offs / sizeof(u32);
@@ -402,7 +402,7 @@
 		shadow = false;
 	}
 
-	if (offs < 0 || (offs % 4) || (size % 4))
+	if ((offs % 4) || (size % 4))
 		return -EINVAL;
 
 	otp = offs / sizeof(u32);